# Quiz 7: Frequency Distributions

Criminal Justice

Q 1Q 1

When the term "frequency" is used statistics,it means
A)the number of cases in a category or value
B)the length of a dispersion line
C)an array of 10 or more numbers
D)none of the above

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Multiple Choice

A

Q 2Q 2

In a frequency distribution of a variable from a questionnaire,the term missing beside an arbitrary number is used to represent
A)possible answer items to a question where no one respondent selected that answer
B)numbers missing from a coded variable scale
C)those respondents who did not return the questionnaire
D)those respondents missing from a question or item

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Multiple Choice

D

Q 3Q 3

If you have a frequency distribution for a variable (like age...)with many values,what can you do to create a frequency distribution that gives a better picture of the data?
A)group the data into no more than 15 classes
B)calculate a mean
C)add a column for the cumulative percent of cases
D)draw a graphic

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Multiple Choice

A

Q 4Q 4

A frequency distribution would represent which of the types of statistics below?
A)descriptive
B)inferential
C)predictive
D)a and c above

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Multiple Choice

Q 5Q 5

A frequency distribution is an example of a
A)univariate statistical technique
B)graphical statistic
C)dispersion technique that is useful for correcting problems with the standard deviation
D)multivariate statistical technique

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Multiple Choice

Q 6Q 6

If you have a substantial number of missing answers in a frequency distribution,you would prefer to use
A)a grouped frequency distribution
B)the percent column
C)the valid percent column
D)the non-missing column

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Multiple Choice

Q 7Q 7

One of the best ways to interpret a frequency distribution is to
A)determine where the extremes are
B)use the middle 90 percent of the data to find the majority
C)determine where the middle of the values might be
D)keep missing values in the percentages so that you discuss all of the cases

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Multiple Choice

Q 8Q 8

One of the most useful columns for interpreting a frequency distribution is the one labeled
A)cumulative percent
B)percent
C)frequencies
D)quartiles

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Multiple Choice

Q 9Q 9

When grouping data for a frequency distribution,you should
A)use at least 6 and not more 15 categories
B)use at least 10 and not more than 25 categories
C)divide the total number of values by 4 to create quartiles
D)use as many categories as is necessary to create a normal distribution

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Multiple Choice

Q 10Q 10

In grouped frequency distributions
A)make sure that all categories have no more than 5 original values
B)each case should fit into only one category
C)each case should be greater than the last one
D)all of the above

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Multiple Choice

Q 11Q 11

Frequency distributions are a good way
A)to display bivariate information
B)to display continuous data in the form of a graphic
C)to interpret public opinion from survey questions
D)to interpret the error present in estimates of dispersion

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Multiple Choice

Q 12Q 12

Grouped frequency distributions are commonly used with
A)cardinal numbers
B)nominal- and ordinal-level data
C)interval- and ratio-level data
D)numbers that are rounded off to the nearest decile

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Multiple Choice

Q 13Q 13

Whenever there are missing cases,it is best to use valid percentages rather than total percentages.

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True False

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True False

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True False

Q 16Q 16

One of the reasons for using cumulative percentages with a frequency distribution is to be able to interpret groupings among the values.

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True False

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True False

Q 18Q 18

If there are fewer than 25 values,a variable should never be grouped for display in a frequency distribution.

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True False

Q 19Q 19

A grouped frequency distribution is one in which several frequency distributions are grouped together to display multiple variables.

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True False

Q 20Q 20

Eliminating extremes in a frequency distribution gives you a better picture of where "average" responses are.

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True False

Q 21Q 21

Rather than discussing the middle values in a frequency distribution,you should focus on the extreme values.

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True False

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True False