Basic Allied Health Statistics And Analysis, Fourth Edition,By Koch Test Bank
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WITH ANSWERS
Basic Allied Health Statistics And Analysis, Fourth Edition,By Koch Test Bank
chapter 2
Indicate whether the statement is true or false.
1. Class width is the number of scores grouped together in an interval, not the scores themselves nor the frequency.
a.
True
b.
False
2. Class limits are also referred to as raw score limits.
a.
True
b.
False
3. The percentile rank and percentile scores are identical.
a.
True
b.
False
4. A frequency distribution is the number of observations associated with each value (or score).
a.
True
b.
False
5. The range represents the most complex measure of variability.
a.
True
b.
False
6. Another term for class size is real class limits.
a.
True
b.
False
7. A grouped frequency distribution generally destroys much of the original detail of the data.
a.
True
b.
False
8. The sum of the frequencies is referred to as cumulative frequency.
a.
True
b.
False
9. You have scored in the 65th percentile for your class. This means that your score is greater than or equal to 65% of all the scores in the class.
a.
True
b.
False
Indicate the answer choice that best completes the statement or answers the question.
10. The rule for subsequent computations includes the preferred class size as:
a.
1, 2, 3, 5, 7, 10, 15, or any multiple of 5
b.
1, 2, 3, 5
c.
1, 2, 3, 6, 12, or any multiple of 6
d.
any of the above, it does not matter
11. The table is an arrangement of values that groups data into columns and rows.
a.
Columns present the data up and down
b.
Rows present the data across
c.
Both are correct
d.
Neither are correct
12. When defining class boundaries,
a.
use the same principle on which rounding of numbers is based
b.
do not need to round
c.
round only if you want to
d.
none of the above
13. Which term best defines the end numbers?
a.
Class interval
b.
Class limits
c.
Class boundaries
d.
Class size
14. Which term best defines the difference between the lower and upper class limit?
a.
Class interval
b.
Class limits
c.
Class boundaries
d.
Class size
15. When creating a frequency distribution, the first step is to ____.
a.
determine the high and low scores
b.
determine the range
c.
determine the number of class intervals
d.
set class limits
16. An example of a variable in a frequency distribution is ____.
a.
third party payers
b.
males
c.
newborns
d.
all of the above
17. Calculate the range for the following data: 50, 14, 12, 22, 99, 70, 25, 29, 81, 54, 19, 80, 18, 36, 72, 69, 38, 56, 66, 24
a.
85
b.
68
c.
81
d.
87
18. If a student scores at the 50th percentile,
a.
his score is in the middle of the distribution
b.
his score is the highest score
c.
his score is the median score
d.
None of the above
19. To approximate the __________________, divide the range by the number of classes desired.
a.
class interval
b.
cumulative frequency
c.
class width
d.
range
20. The real limits of the class interval 1-3 are:
a.
0.5 3.4
b.
1 3
c.
0 4
d.
1.5 3.5
21. The percentile rank is defined as ___________.
a.
lower than the given score
b.
the percentile for a specific score
c.
the score that one has to attain to reach a specific percentile
d.
higher than the given score
22. Based upon the following information, the upper class limit of the lowest interval is:
Heights (in centimeters) of Patients
175-179
170-174
165-169
160-164
155-159
150-154
a.
150
b.
179
c.
154
d.
175
23. The purpose of a grouped frequency distribution is ____.
a.
to condense data to a more readily grouped form
b.
to arrange scores
c.
to bring order to chaos
d.
a and c
24. A cumulative frequency is ____.
a.
the sum of the frequencies, starting at the lowest interval and including the frequencies with that interval
b.
the sum of the frequencies, starting at the highest interval and including the frequencies with that interval
c.
the sum of the frequencies, starting at the lowest interval and excluding the frequencies with that interval
d.
the sum of the frequencies, starting at the highest interval and excluding the frequencies with that interval
25. Which best defines the term quartiles?
a.
Position of a score when all scores are arranged in order such as low to high
b.
Arranged data divided into subgroups
c.
Arranged data divided into ten equal parts
d.
Arranged data divided into 100 equal segments
26. A frequency can be defined as:
a.
the sum of the frequencies
b.
the number of times a certain score appears in a distribution
c.
the difference between the largest and the smallest score
d.
the category into which a score can be placed
27. In a table, whole numbers most often are right-justified.
a.
True
b.
False
28. Which best defines the term percentiles?
a.
Position of a score when all scores are arranged in order such as low to high
b.
Arranged data divided into subgroups
c.
Arranged data divided into ten equal parts
d.
Arranged data divided into 100 equal segments
29. In a table, decimal numbers must be aligned by the decimal point and have the same number of decimal places.
a.
True
b.
False
30. Which term is also referred to as real class limits?
a.
Class interval
b.
Class limits
c.
Class boundaries
d.
Class size
31. What is the range in this set of scores: 5,10, 15, 20, 25, 30, 35, 40, 45, and 50?
a.
5
b.
30
c.
45
d.
50
32. A Table Header or Title is an important component of a table. A table header should clearly answer:
a.
what the data represents
b.
what the source of the data is
c.
when the data was collected and/or the time period represented in the table
d.
All of the above
33. Which best defines the term rank?
a.
Position of a score when all scores are arranged in order of low to high
b.
Arranged data divided into subgroups
c.
Arranged data divided into ten equal parts
d.
Arranged data divided into 100 equal segments
34. ______________ are used to present large amounts of text-based quantitative data.
a.
graphs
b.
charts
c.
tables
d.
polygons
35. A class interval limit of 60 to 69 pounds includes all measurements from _______ to _______.
a.
59.49 to 69.49
b.
59.50 to 69.50
c.
59.50 to 69.49
d.
60.49 to 69.50
36. Data divided into ten equal parts are referred to as ____________.
a.
rank
b.
quartiles
c.
percentiles
d.
deciles
37. The text in a table should always be right-justified.
a.
True
b.
False
38. A class is ____.
a.
a category into which a score can be placed
b.
a score or number
c.
a range of scores
d.
all of the above
39. Which term best defines the range of scores?
a.
Class interval
b.
Class limits
c.
Class boundaries
d.
Class size
40. For interval limits, 40 44, the class size is 4
a.
True
b.
False
41. The first class interval in the grouped frequency distribution is 5-10. The width of the interval is:
a.
5
b.
5.5
c.
6
d.
6.5
42. Which best defines the term deciles?
a.
Position of a score when all scores are arranged in order such as low to high
b.
Arranged data divided into subgroups
c.
Arranged data divided into ten equal parts
d.
Arranged data divided into 100 equal segments
43. When done manually, tally marks are recorded for each score in the array, and the total tally marks becomes the ________________ for each class or category.
a.
frequency
b.
range
c.
interval
d.
median
44. Range can be defined as:
a.
a category into which a score can be placed
b.
the number of times a certain score appears in a distribution
c.
the difference between the largest and the smallest score
d.
the category into which a score can be placed
45. Which best defines a class?
a.
A category in which a score can be placed
b.
A single score in a small distribution
c.
Both a and b
d.
Neither a nor b
46. Which of the following is not one of the four main table elements?
a.
Table header
b.
Data
c.
Table number
d.
Percentage component
47. Not all tables require a ________________. This is used to aid the reader in accessing the data.
a.
table title
b.
table number
c.
table footnote
d.
table heading
Enter the appropriate word(s) to complete the statement.
48. In a frequency distribution in which the lowest value is 5 and the highest value is 20, the range is ____________________.
49. You are constructing a grouped frequency distribution using length of stay data. You have length of stay scores
ranging from 2 days to 16 days. If you select 5 as the number of class intervals you want, _______(2, 3, 4, 5) is the
best class size.
50. The ideal or recommended number of class intervals is ____________________ (12, 15, 21, 25).
51. It is recommended that the number of class intervals be at least 5 and no more than ____________________ (15, 20, 12, 25).
52. A(n) ______________________________ (2-word term) is the number of observations of each value or score.
53. In a frequency distribution, the lowest score is 25 and the highest score is 50. What is the range?
Answer Key
1. True
2. True
3. True
4. True
5. False
6. False
7. True
8. True
9. True
10. a
11. c
12. a
13. b
14. d
15. a
16. d
17. d
18. c
19. c
20. a
21. b
22. c
23. d
24. a
25. b
26. b
27. a
28. d
29. a
30. c
31. c
32. d
33. a
34. c
35. c
36. d
37. b
38. a
39. a
40. b
41. c
42. c
43. a
44. c
45. c
46. d
47. b
48. 15
fifteen
49. 3
50. 15
51. 20
52. frequency distribution
53. 25
chapter 14
Indicate whether the statement is true or false.
1. Data presented in a table can be more detailed; however, the visual presentation of a graph can show relationships among data in a format that is easier to read and comprehend.
a.
True
b.
False
2. A histogram reflects continuous quantitative data.
a.
True
b.
False
3. In a frequency distribution, the horizontal X-axis represents the frequency.
a.
True
b.
False
4. Bars in a bar chart can only be presented vertically.
a.
True
b.
False
5. Line graphs can be used to demonstrate the relationship between continuous quantities.
a.
True
b.
False
6. When constructing a line graph, the y-axis should always start at zero.
a.
True
b.
False
7. The Y-axis is also referred to as the vertical line.
a.
True
b.
False
8. Line charts show trend over time.
a.
True
b.
False
9. When creating histograms, always define frequency groups that do not overlap.
a.
True
b.
False
10. A line graph is to a bar graph what a frequency polygon is to a histogram.
a.
True
b.
False
11. Data presentation software is best for determining which axis is the better axis on which to place data and know whether the chart created is too cluttered or confusing.
a.
True
b.
False
Indicate the answer choice that best completes the statement or answers the question.
12. Which of the following graphs would be best to use to display the number of discharges by medical service for the past year?
a.
Histogram
b.
Bar Graph
c.
Line Graph
d.
Pie Chart
13. Which of the following graphs would be best to use to display the five-year cancer survival rates of breast cancer patients for the past year at your hospital?
a.
Histogram
b.
Bar Graph
c.
Line Graph
d.
Pie Graph
14. When constructing a histogram,
a.
the vertical scale should begin at zero
b.
the vertical scale should begin at the middle number of the range
c.
the vertical scale should begin at the end number of the range
d.
the vertical scale should begin wherever it looks nice
15. Tables are used to present large amounts of text-based, quantitative data in a matrix format. The matrix is made up of:
a.
columns
b.
rows
c.
columns and rows
d.
neither columns nor rows
16. Which of the following graphs would be best to use to display the percentages of diagnosis at a behavioral health center?
a.
Histogram
b.
Bar Graph
c.
Line Graph
d.
Pie Graph
17. Which graph presentation is most effective when a small number of categories is demonstrated?
a.
Histogram
b.
Bar graph
c.
Line graph
d.
Pie graph
18. Healthy Hospital displays the incidence of specific diagnoses for the month of January. The best method to display this is the use of a(n) ____.
a.
pie chart
b.
line graph
c.
frequency distribution
d.
bar diagram
19. A frequency polygon:
a.
uses rectangles and squares to show values
b.
has lines that connect the dots
c.
shows percentages of a total
d.
none of the above
20. Which type of graph makes use of pictures in the display of data?
a.
Pie chart
b.
Pictograph
c.
Stack bar graph
d.
Line graph
21. Which statement is true with regard to graphic presentations?
a.
They are more impressive than tables and the data is easier to remember.
b.
They save time and can provide a comprehensive picture of a problem.
c.
They can bring out hidden facts and relationships.
d.
All of the above are true.
22. The wedges or sections in a pie graph represent ____.
a.
frequency groups
b.
various data
c.
percentages
d.
classes
23. Which statement is true with regard to an effective graph?
a.
It is simple, clean, and well labeled.
b.
It is packed with as much data as possible.
c.
Both a and b are correct.
d.
Neither a nor b is correct.
24. Where do low numbers appear in a frequency polygon?
a.
Bottom and to the right
b.
Bottom and to the left
c.
Top and to the right
d.
Top and to the left
25. Graphic presentations of data are most effective when:
a.
the scale begins at zero
b.
the horizontal scale reads from left to right and the vertical scale reads from bottom to top
c.
the title is complete and concise and there are no unnecessary words or distractions
d.
all of the above
26. When referring to a histogram, the horizontal axis is:
a.
composed of the range rather than the score limits
b.
composed of the class boundaries or midpoints rather than the score limits
c.
both a and b
d.
neither a nor b
27. A frequency polygon is similar to a histogram, however:
a.
a dot is placed at the midpoint of the interval
b.
midpoints are plotted
c.
points are plotted and connected rather than rectangles drawn to represent frequencies
d.
all of the above
28. The horizontal X-axis represents ____.
a.
the score of the interval
b.
the score limits of the interval
c.
the midpoints of the interval
d.
all of the above
29. Which chart/graph is the method of choice for plotting data over time?
a.
Line chart
b.
Stack bar chart
c.
Histogram
d.
Frequency polygon
30. When graphing a frequency distribution, what scale is used along the baseline?
a.
Score limits
b.
Lower limits
c.
Real limits or midpoints
d.
Class intervals
31. When constructing a graph,
a.
review the data for completeness and accuracy and understand the data
b.
colors and patterns are useful to emphasize a point, but they can also be distracting
c.
the maximum number of data elements illustrated in a graph should be five
d.
all of the above
32. A histogram is a type of a(n) ____.
a.
chart
b.
graph
c.
table
Enter the appropriate word(s) to complete the statement.
33. A pie graph is used to illustrate ____________________ (percentage) of the data.
34. The ____________________ (Y-axis/X-axis) is also referred to as the vertical line.
36. A ____________________ (table/graph) conveys more information quickly.
37. A(n) ____________________ graph displays vertical bars to depict frequency distributions for continuous data.
38. To demonstrate the relationship between continuous quantities, it is best to use _________________________.(line graphs/pie charts)
39. A(n) ____________________ chart is useful for presenting data for a single variable.
40. To best demonstrate frequencies in changes over a period of time, a(n) ____________________ graph should be utilized.
41. A(n) ____________________ graph would be most effective to show the average length of stay by hospital service.
42. A(n) _______________ uses the same data as a histogram but resembles a line chart, in that it connects the midpoints of each data interval with a line.
43. A(n) _______________ is useful for comparing the relative contribution of the series data in each of the categorical variables.