DOWNLOAD THE Test Bank for Business Statistics Communicating with
Numbers 2nd Edition Jaggia
Chapter 02
1. A frequency distribution for qualitative data groups these data into classes called intervals and
records the total number of observations in each class.
True False
2. The relative frequency of a category is calculated by dividing the category's frequency by the total
number of observations.
True False
3. The percent frequency of a category equals the frequency of the category multiplied by 100%.
True False
4. A pie chart is a segmented circle that portrays the categories and relative sizes of some
quantitative variable.
True False
5. A bar chart depicts the frequency or relative frequency of each category of qualitative data as a
bar rising vertically from the horizontal axis. It is also acceptable for the bar to extend horizontally
from the vertical axis.
True False
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,DOWNLOAD THE Test Bank for Business Statistics Communicating with
Numbers 2nd Edition Jaggia
6. A bar chart may be displayed horizontally.
True False
7. To approximate the width of a class in the creation of a bar chart, we may use this formula:
True False
8. For quantitative data, a relative frequency distribution identifies the proportion of observations that
fall into each class.
True False
9. For quantitative data, a cumulative relative frequency distribution records the proportion (fraction)
of values that fall below the upper limit of each class.
True False
10. A histogram is a series of rectangles where the width and height of each rectangle represent the
frequency (or relative frequency) and the width of the class, respectively.
True False
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,Bank for Business Statistics
DOWNLOAD THE Test Communicating with
Numbers 2nd Edition Jaggia
11. A polygon connects a series of neighboring points where each point represents the midpoint of a
particular class and its associated frequency or relative frequency.
True False
12. An ogive is a graph that plots the cumulative frequency (or the cumulative relative frequency) of
each class above the lower limit of the corresponding class.
True False
13. A stem-and-leaf diagram is useful in that it gives an overall picture of where quantitative data are
centered and how the data are dispersed from the center.
True False
14. A scatterplot is a graphical tool that helps determine whether or not two quantitative variables are
related.
True False
15. When constructing a scatterplot for two quantitative variables, we usually refer to one variable as
x and another one as y. Typically, we graph x on the vertical axis and y on the horizontal axis.
True False
16. When constructing a pie chart, only a few, the most frequent, categories must be included in the
pie.
True False
mynursytest.store
, Bank for Business Statistics
DOWNLOAD THE Test Communicating with
Numbers 2nd Edition Jaggia
17. When summarizing quantitative data it is always better to have up to 30 classes in a frequency
distribution.
True False
18. Scatterplot is a graphical tool that is focused on describing one variable.
True False
19. Frequency distributions may be used to describe which of the following types of data?
A. Nominal and ordinal data only
B. Nominal and interval data only
C. Nominal, ordinal, and interval data only
D. Nominal, ordinal, interval, and ratio data
20. In order to summarize qualitative data, a useful tool is a .
A. histogram
B. frequency distribution
C. stem-and-leaf diagram
D. All of the above
mynursytest.store
Numbers 2nd Edition Jaggia
Chapter 02
1. A frequency distribution for qualitative data groups these data into classes called intervals and
records the total number of observations in each class.
True False
2. The relative frequency of a category is calculated by dividing the category's frequency by the total
number of observations.
True False
3. The percent frequency of a category equals the frequency of the category multiplied by 100%.
True False
4. A pie chart is a segmented circle that portrays the categories and relative sizes of some
quantitative variable.
True False
5. A bar chart depicts the frequency or relative frequency of each category of qualitative data as a
bar rising vertically from the horizontal axis. It is also acceptable for the bar to extend horizontally
from the vertical axis.
True False
mynursytest.store
,DOWNLOAD THE Test Bank for Business Statistics Communicating with
Numbers 2nd Edition Jaggia
6. A bar chart may be displayed horizontally.
True False
7. To approximate the width of a class in the creation of a bar chart, we may use this formula:
True False
8. For quantitative data, a relative frequency distribution identifies the proportion of observations that
fall into each class.
True False
9. For quantitative data, a cumulative relative frequency distribution records the proportion (fraction)
of values that fall below the upper limit of each class.
True False
10. A histogram is a series of rectangles where the width and height of each rectangle represent the
frequency (or relative frequency) and the width of the class, respectively.
True False
mynursytest.store
,Bank for Business Statistics
DOWNLOAD THE Test Communicating with
Numbers 2nd Edition Jaggia
11. A polygon connects a series of neighboring points where each point represents the midpoint of a
particular class and its associated frequency or relative frequency.
True False
12. An ogive is a graph that plots the cumulative frequency (or the cumulative relative frequency) of
each class above the lower limit of the corresponding class.
True False
13. A stem-and-leaf diagram is useful in that it gives an overall picture of where quantitative data are
centered and how the data are dispersed from the center.
True False
14. A scatterplot is a graphical tool that helps determine whether or not two quantitative variables are
related.
True False
15. When constructing a scatterplot for two quantitative variables, we usually refer to one variable as
x and another one as y. Typically, we graph x on the vertical axis and y on the horizontal axis.
True False
16. When constructing a pie chart, only a few, the most frequent, categories must be included in the
pie.
True False
mynursytest.store
, Bank for Business Statistics
DOWNLOAD THE Test Communicating with
Numbers 2nd Edition Jaggia
17. When summarizing quantitative data it is always better to have up to 30 classes in a frequency
distribution.
True False
18. Scatterplot is a graphical tool that is focused on describing one variable.
True False
19. Frequency distributions may be used to describe which of the following types of data?
A. Nominal and ordinal data only
B. Nominal and interval data only
C. Nominal, ordinal, and interval data only
D. Nominal, ordinal, interval, and ratio data
20. In order to summarize qualitative data, a useful tool is a .
A. histogram
B. frequency distribution
C. stem-and-leaf diagram
D. All of the above
mynursytest.store
