Test Bank For BSTAT 1st Edition by Keller

Test Bank For BSTAT 1st Edition by Keller

Description

WITH ANSWERS

 

BSTAT 1st Edition by Keller  

Test Bank 

 

CHAPTER 2:  GRAPHICAL AND TABULAR DESCRIPTIVE TECHNIQUES

 

TRUE/FALSE

 

1. Your age group (1-9; 10-19; 20-29; 30-39; etc.) is an interval variable.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

2. Your gender is a nominal variable.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

3. Your final grade in a course (A, B, C, D, E) is a nominal variable.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

4. Your age is an interval variable.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

5. Interval data may be treated as ordinal or nominal.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

6. Whether or not you are over the age of 21 is a nominal variable.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

7. The values of quantitative data are categories.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

8. Interval data, such as heights, weights, and incomes, are also referred to as quantitative or numerical data.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

9. All calculations are permitted on interval data.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

10. Nominal data are also called qualitative or categorical data.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

11. A variable is some characteristic of a population or sample.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

12. With nominal data, there is one and only one way the possible values can be ordered.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

13. You cannot calculate and interpret differences between numbers assigned to nominal data.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

14. A bar chart is used to represent interval data.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

15. One of the advantages of a pie chart is that it clearly shows that the total percentages of all the categories add to 100%.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

16. Bar and pie charts are graphical techniques for nominal data. The former focus the attention on the frequency of the occurrences of each category, and the later emphasizes the proportion of occurrences of each category.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

17. A relative frequency distribution lists the categories and their counts.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

18. A frequency distribution lists the categories and the proportion with which each occurs.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

19. From a pie chart you are able to find the frequency for each category.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

20. The intervals (classes) in a histogram do not overlap.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

21. The intervals (classes) in a histogram are equally wide.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

22. In a histogram, each observation is assigned to one or more classes.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

23. The number of class intervals in a histogram depends on the number of observations in the data set.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

24. A relative frequency distribution describes the proportion of data values that fall within each category.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

25. A stem-and-leaf display reveals more information about the original data than does a histogram.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

26. The number of observations within each class may be found in a frequency distribution.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

27. The advantage of a stem-and-leaf display over a histogram is that we can see the actual observations.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

28. According to the stem-and-leaf plot below, the median quiz score for this data set is 8.

 

Stem-and-leaf of Quiz Score; N = 75
Leaf Unit = 1
9	0	000112333
14	0	56899
21	1	0000123
26	1	66699
33	2	3334445
(8)	2	66677888
34	3	0023344
27	3	56669999
19	4	000122233
10	4	5556667799

 

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

29. A cumulative relative frequency distribution lists the number of observations that lie below each of the class limits.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

30. According to the stem-and-leaf plot below, this data set has a negative median.

 

Stem-and-leaf of P/E ratio; N = 75
Leaf Unit = 0.01
1	-2	6
2	-2	0
5	-1	555
8	-1	420
22	-0	99999887777665
36	-0	44322111111000
(14)	0	01122233333344
25	0	66678889999
14	1	0022222334
4	1	56
2	2	03

 

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

31. A histogram represents interval data.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

32. A stem-and-leaf display represents nominal data.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

33. According to the stem-and-leaf plot below, this data set is symmetric.

 

Stem-and-leaf of P/E ratio; N = 10
Leaf Unit = 0.10
2	-1	53
4	-0	97
(2)	-0	65
4	0	3
3	0	6
2	1	3
1	1	8

 

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

34. When a distribution has more values to the left and tails off to the right, it is skewed negatively.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

35. A histogram is said to be symmetric if, when we draw a vertical line down the center of the histogram the two sides are nearly identical.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

36. A skewed histogram is one with a long tail extending either to the right or left.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

37. When a distribution has more values to the right and tails to the left, we say it is skewed negatively.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

38. The sum of relative frequencies in a distribution always equals 1.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

39. The sum of cumulative relative frequencies always equals 1.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

40. The original observations cannot be determined once they are grouped into a frequency distribution.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

41. A modal class is the class with the largest number of observations.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

42. Experience shows that few students hand in their statistics exams early; most prefer to hand them in near the end of the test period. This means the time taken by students to write exams is positively skewed.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

43. The graph below is an example of a histogram.

 

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

44. The sum of cumulative relative frequencies always equals 1.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

45. A line chart is created by plotting the values of the variable on the vertical axis and the time periods on the horizontal axis.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

46. Time series data are often graphically depicted on a line chart, which is a plot of the variable of interest over time.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

47. A line chart that is flat shows no fluctuation in the variable being presented.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

48. The graph below represents a line graph.

 

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

49. A department stores monthly sales (in thousands of dollars) for the last year were as follows. A histogram should be used to present these data.

 

Month	1	2	3	4	5	6	7	8	9	10	11	12
Sales	78	74	83	87	85	93	100	105	103	89	78	94

 

 

ANS:   F

 

NAT:   Analytic; Descriptive Statistics

 

50. The line chart below shows tomato prices each month from January (month 1) to December last year ($ per pound). By looking at this chart you can see the lowest tomato prices occurred in July.

 

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

51. The line chart below shows cucumber prices fluctuated from $2.00 per pound to over $4.50 per pound during the year.

 

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

52. The graphical technique used to describe the relationship between two interval variables is the scatter diagram.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

53. The two most important characteristics revealed by the scatter diagram are the strength and direction of the linear relationship.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

54. Data for calories and salt content (milligrams of sodium) in 17 brands of meat hot dogs are shown in the scatter diagram below. According to this diagram, it appears that hot dogs that are high in sodium are generally low in calories, and hot dogs with low sodium are generally high in calories.

 

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

55. If we draw a straight line through the points in a scatter diagram and most of the points fall close to the line, there must be a positive relationship between the two variables.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

56. The two most important characteristics to examine in a scatter diagram are the number of possible categories for X and Y and the number of observations in each category.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

57. When two variables are linearly related, and tend to move in opposite directions, we describe the nature of their association as a negative linear relationship.

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

58. Correlation implies causation.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

59. If two variables have a strong linear relationship, that means one variable is causing the other variable to go up or down.

 

ANS:   F                      NAT:   Analytic; Descriptive Statistics

 

60. The scatter diagram below depicts data with a negative linear relationship.

 

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

61. The first scatter diagram below shows a stronger linear relationship than the second scatter diagram. (Assume the scales on both scatter diagrams are the same.)

 

 

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

62. A professor examines the relationship between minutes studying and exam score (out of 200 points) for a random sample of his students. The scatter diagram is shown below. It appears that study time has somewhat of a positive linear relationship with exam score.

 

 

ANS:   T                      NAT:   Analytic; Descriptive Statistics

 

MULTIPLE CHOICE

 

63. The classification of student major (accounting, economics, management, marketing, other) is an example of a(n)

a.	nominal random variable.
b.	interval random variable.
c.	continuous random variable.
d.	parameter.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

64. The classification of student class designation (freshman, sophomore, junior, senior) is an example of a(n)

a.	nominal random variable.
b.	interval random variable.
c.	ordinal random variable.
d.	a parameter.

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

65. A researcher wishes to estimate the textbook costs of first-year students at Barry University. To do so, he recorded the textbook cost of 300 first-year students and found that their average textbook cost was $195 per semester. The variable of interest to the researcher is

a.	textbook cost.
b.	class rank.
c.	number of students.
d.	name of university.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

66. All calculations are permitted on what type of data?

a.	Interval data
b.	Nominal data
c.	Ordinal data
d.	All of these choices are true.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

67. Values must represent ordered rankings for what type of data?

a.	Interval data
b.	Nominal data
c.	Ordinal data
d.	None of these choices.

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

68. For what type of data are frequencies the only calculations that can be done?

a.	Interval data
b.	Nominal data
c.	Ordinal data
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

69. For which type of data are the values arbitrary numbers?

a.	Interval data
b.	Nominal data
c.	Ordinal data
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

70. Which of the following statements about pie charts is false?

a.	A pie chart is a graphical representation of a relative frequency distribution.
b.	You can always determine frequencies for each category by looking at a pie chart.
c.	The total percentage of all the slices of a pie chart is 100%.
d.	The area of a slice of a pie chart is the proportion of all the individuals that fall into that particular category.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

71. Which of the following situations is best suited for a pie chart?

a.	The number of dollars spent this year on each type of legal gambling.
b.	The percentage of a charitable donation that goes to administrative costs vs. directly to the charity.
c.	The number of students in your class who received an A, B, C, D, F on their exam.
d.	All of these choices are true.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

72. Which situation identifies when to use pie charts and/or bar charts?

a.	You want to describe a single set of data.
b.	Your data is nominal.
c.	You want to show the number or the percentage of individuals in each category.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

73. Suppose you measure the number of minutes it takes an employee to complete a task, where the maximum allowed time is 5 minutes, and each time is rounded to the nearest minute. Data from 130 employees is summarized below. How long did it take most employees to complete the task?

 

Time (minutes)	1	2	3	4	5
Frequency	25	40	50	35	30

 

a.	5 minutes
b.	3 minutes
c.	30 minutes
d.	50 minutes

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

74. Car buyers were asked to indicate the car dealer they believed offered the best overall service. The four choices were Convoy Motors (C), Mako Chrysler (M), Torrent Auto (T), and Unequaled Chevrolet (U). The following data were obtained:

 

T	C	C	C	U	C	M	T	C	U
U	M	C	M	T	C	M	M	C	M
T	C	C	T	U	M	M	C	C	T
T	U	C	U	T	M	M	C	U	T

 

What percentage of car buyers identified Convoy Motors as having the best overall service?

a.	1/4 = 0.25 or 25%
b.	14/40 = 0.35 or 35%
c.	14%
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

75. Which of the following represents a graphical presentation of interval data?

a.	A bar chart.
b.	A histogram.
c.	A pie chart.
d.	All of these choices are true.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

76. Which of the following statements about histograms is false?

a.	A histogram is a summary of interval data.
b.	A histogram is made of a series of intervals, called classes.
c.	The classes in a histogram cover the complete range of observations.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

77. Which of the following statements about histograms is false?

a.	The intervals of a histogram do not overlap.
b.	Every observation is assigned to one and only one class in a histogram.
c.	The intervals of a histogram are equally wide.
d.	None of these choices.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

78. Which of the following describes the shape of the histogram below?

 

 

a.	Positively skewed
b.	Negatively skewed
c.	Symmetric
d.	None of these choices

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

79. The relative frequency of a class in a histogram is computed by

a.	dividing the frequency of the class by the number of classes.
b.	dividing the frequency of the class by the class width.
c.	dividing the frequency of the class by the total of all frequencies.
d.	None of these choices.

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

80. Compare the two histograms below. Which statement is true?

 

 

 

a.	The center of histogram A is lower than the center of histogram B.
b.	The center of histogram A is higher than the center of histogram B.
c.	The center of histogram A is the same as the center of histogram B.
d.	You cannot compare the centers of these two histograms without the original data.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

81. Compare the two histograms below. Which statement is true?

 

 

 

a.	The spread of histogram A is smaller than the spread of histogram B.
b.	The spread of histogram A is larger than the spread of histogram B.
c.	The spread of histogram A is the same as the spread of histogram B.
d.	You cannot compare the spreads of these two histograms without the original data.

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

82. Compare the two histograms below. Which statement is true?

 

 

 

a.	The shape of histogram A is the same as the shape of histogram B.
b.	The shape of histogram A is positively skewed compared to histogram B.
c.	The shape of histogram A is negatively skewed compared to histogram B.
d.	You cannot compare the shapes of these two histograms without the original data.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

83. A modal class in a histogram is the class that includes

a.	the largest number of observations.
b.	the smallest number of observations.
c.	the largest observation in the data set.
d.	the smallest observation in the data set.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

84. The sum of the relative frequencies for all classes in a histogram always equals

a.	the number of classes.
b.	the class width.
c.	the total of all the frequencies.
d.	one.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

85. Which of the following statements about shapes of histograms is true?

a.	A histogram is said to be symmetric if, when we draw a vertical line down the center of the histogram, the two sides are identical in shape and size.
b.	A negatively skewed histogram is one with a long tail extending to the left.
c.	A positively skewed histogram is one with a long tail extending to the right.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

86. Compare the spread of the two histograms below. Which of the following is true?

 

 

 

a.	Data Set A has a larger spread than Data Set B.
b.	Data Set A has a smaller spread than Data Set B.
c.	Data Set A has the same spread as Data Set B.
d.	You cannot compare the spreads of these histograms without the original data.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

87. Which of the following is true about a stem-and-leaf display?

a.	You can recreate the original data set from it.
b.	Its shape resembles a histogram turned on its side.
c.	It provides an organized way to depict interval data.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

88. What does the length of each line of a stem-and-leaf display represent?

a.	The percentage of observations in the interval represented by that stem.
b.	The number of observations in the interval represented by that stem.
c.	The total frequency of observations within or below that stem.
d.	The number of digits to the left of the decimal point.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

89. What values are displayed on a cumulative relative frequency distribution?

a.	The number of observations that fall into each class interval.
b.	The proportion of observations that fall into each class interval.
c.	The number of observations that fall below each class interval.
d.	The proportion of observations that fall below each class interval.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

90. What type of graph depicts the data below?

 

 

a.	A line chart
b.	A histogram
c.	A dot plot
d.	A bar chart

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

91. Observations that are measured at successive points in time is what type of data?

a.	Time-series data
b.	Cross-sectional data
c.	Successive data
d.	None of these choices.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

92. Observations that are measured at the same time represent what type of data?

a.	Time-series data
b.	Cross-sectional data
c.	Synchronous data
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

93. Which of the following represents time-series data?

a.	The length of time each of the top 100 stocks have been available on the NYSE.
b.	The most popular time of year that people purchase the top 100 stocks on the NYSE.
c.	The value of the #1 stock on the NYSE each month over a one-year period.
d.	All of these choices are true.

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

94. Time-series data are often graphically depicted how?

a.	Bar chart
b.	Histogram
c.	Line chart
d.	All of these choices are true.

 

 

ANS:   C                     NAT:   Analytic; Descriptive Statistics

 

95. Which of the following statements describes a line chart?

a.	A line chart is a graph of time-series data.
b.	A line chart is a plot of a variable over time.
c.	The horizontal axis of a line chart contains time periods.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

96. What kind(s) of data can be depicted by a line chart?

a.	Frequencies of an interval over time.
b.	Frequencies of a nominal variable over time.
c.	Relative frequencies of a nominal variable over time.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

97. Which of the following statements describe(s) the line chart below?

 

 

a.	November experienced the lowest sales throughout the year.
b.	August experienced the highest sales throughout the year.
c.	Sales did not fluctuate more than 30 units on either side of 90.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

98. The relationship between two interval variables is graphically displayed by a

a.	scatter diagram
b.	histogram
c.	bar chart
d.	pie chart

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

99. In order to draw a scatter diagram, we need interval data for

a.	one variable
b.	two variables
c.	three variables
d.	four variables

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

100. Which of the following statements is false?

a.	You can examine the relationship between two nominal variables using a cross-classification table.
b.	You can only apply statistical techniques to one variable at a time.
c.	You can examine the relationship between two interval variables using a scatter diagram.
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

101. How do you determine whether two interval variables have a positive linear relationship?

a.	Most of the points fall close to a straight line with positive slope.
b.	As the X variable increases, the Y variable increases in a linear way.
c.	The scatter diagram shows a linear pattern that is going uphill.
d.	All of these choices are true.

 

 

ANS:   D                     NAT:   Analytic; Descriptive Statistics

 

102. If the data in a scatter diagram is scattered completely at random, what do you conclude?

a.	There is no linear relationship between X and Y.
b.	There is a strong linear relationship between X and Y.
c.	There is a strong linear relationship between X and Y that is described by a horizontal (flat) line.
d.	None of these choices.

 

 

ANS:   A                     NAT:   Analytic; Descriptive Statistics

 

103. Which of the following is the method statisticians use to draw the best fitting straight line through the data on a scatter diagram?

a.	The fit best method.
b.	The least squares method.
c.	The point-intercept method.
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

104. Which of the following describes a positive linear relationship between X and Y?

a.	As the X values increase, the Y values increase in a linear manner.
b.	As the X values decrease, the Y values decrease in a linear manner.
c.	The X and Y values move uphill together in a linear manner.
d.	All of these choices are true.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

105. When two variables tend to move in opposite directions, yet still form a linear pattern, how do you describe their relationship?

a.	A positive linear relationship.
b.	A negative linear relationship.
c.	A proportional inverse relationship.
d.	None of these choices.

 

 

ANS:   B                     NAT:   Analytic; Descriptive Statistics

 

COMPLETION

 

106. The Chief of Police conducted a survey of the officers on his squad. An officers shooting score at target practice is an example of a(n) ____________________ variable.

 

ANS:

interval

quantitative

numerical

 

NAT:   Analytic; Descriptive Statistics

 

107. The Dean of Students conducted a survey on campus. The gender of each student is an example of a(n) ____________________ variable.

 

ANS:

nominal

categorical

qualitative

 

NAT:   Analytic; Descriptive Statistics

 

108. The Dean of Students conducted a survey on campus. Class rank (Freshman, Sophomore, Junior, and Senior) is an example of a(n) ____________________ variable.

 

ANS:   ordinal

 

NAT:   Analytic; Descriptive Statistics

 

109. The final grade received in a Literature course (A, B, C, D, or F) is an example of a(n) ____________________ variable.

 

ANS:

nominal

categorical

qualitative

 

NAT:   Analytic; Descriptive Statistics

 

110. In purchasing a used computer, there are a number of variables to consider. The age of the computer is an example of a(n) ____________________ variable.

 

ANS:

interval

quantitative

numerical

 

NAT:   Analytic; Descriptive Statistics

 

111. In purchasing an automobile, there are a number of variables to consider. The body style of the car (sedan, coupe, wagon, etc.) is an example of a(n) ____________________ variable.

 

ANS:

nominal

categorical

qualitative

 

NAT:   Analytic; Descriptive Statistics

 

112. Two types of graphs that organize nominal data are ____________________ and ____________________.

 

ANS:

pie charts; bar charts

bar charts; pie charts

 

NAT:   Analytic; Descriptive Statistics

 

113. A bar chart is used to represent ____________________ data.

 

ANS:

nominal

categorical

qualitative

 

NAT:   Analytic; Descriptive Statistics

 

114. A pie chart is used to represent ____________________ data.

 

ANS:

nominal

categorical

qualitative

 

NAT:   Analytic; Descriptive Statistics

 

115. A(n) ____________________ chart is often used to display frequencies; a(n) ____________________ chart graphically shows relative frequencies.

 

ANS:   bar; pie

 

NAT:   Analytic; Descriptive Statistics

 

116. A pie chart shows the ____________________ of individuals that fall into each category.

 

ANS:

perce

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