# A Statistics Refresher

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Question 1
Free
Multiple Choice

## Statistical tools are used for

describing numbers.

All of these

Question 2
Free
Multiple Choice

continuous

discrete

interval

None of these

Question 3
Free
Multiple Choice

continuous

discrete

contiguous

None of these

Question 4
Free
Multiple Choice

ordinal.

ratio.

interval.

nominal.

Question 5
Free
Multiple Choice

ratio.

ordinal.

interval.

nominal.

Question 6
Multiple Choice

## Numbers are assigned to each player on the university basketball team.This use of numbers could BEST be characterized as

a nominal scale.
an ordinal scale.
an interval scale.
a ratio scale.
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Question 7
Multiple Choice

## An instructor rank-orders students in her measurement class based on their performance on a quiz of Chapter 3 in the textbook.In this instance,the instructor is using which type of scale?

nominal
interval
ordinal
comparative
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Question 8
Multiple Choice

## Yards gained by running backs during a football game is an example of which type of scale?

nominal
ordinal
interval
ratio
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Question 9
Multiple Choice

## Miles-per-hour is an example of which type of scale?

nominal
ordinal
ratio
interval
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Question 10
Multiple Choice

## Which is the only type of scale that has an absolute zero point?

nominal
ordinal
ratio
interval
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Question 11
Multiple Choice

## Alfred Binet conceived the assignment of numbers to the results of a person's response to questions on an intelligence test to be what type of scale?

nominal
ordinal
interval
ratio
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Question 12
Multiple Choice

## The data from most psychological tests could BEST be characterized as which level of measurement?

nominal
ordinal
interval
ratio
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Question 13
Multiple Choice

## The French word for "black" is a convenient acronym for

five factors measured by Binet's test.
four levels of measurement.
four parts of the partitioned normal curve.
five families of frequency distributions.
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Question 14
Multiple Choice

## A frequency distribution typically includes

the average score and a measure of diversion around it.
each possible score and how often it occurs.
an estimate of how spread out the scores are.
an index of how "popular" a particular frequency is.
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Question 15
Multiple Choice

## Which is the MOST common factor influencing a decision as to the size of class interval in a grouped frequency distribution?

the number of scores above the mean
the size of the mean
convenience
the size of the mean and the standard deviation
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Question 16
Multiple Choice

## Frequency distributions may be illustrated in a variety of ways.Which of the following illustrations is the MOST popular of illustrating a frequency distribution?

a histogram
a scatterplot
a pie chart
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Question 17
Multiple Choice

## In a grouped frequency distribution

the total of the frequency column is equal to the total number of scores in the distribution.
test-score intervals replace the actual test scores.
each test score must fall in only one test-score interval.
All of these
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Question 18
Multiple Choice

## Measures of central tendency refer to which part of the frequency distribution?

the high end of the distribution
the middle of the distribution
the low end of the distribution
the very end of the distribution
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Question 19
Multiple Choice

## In calculating the mean of a distribution of test scores,the person analyzing the data takes account of:

only the extreme scores in the distribution.
only the middle scores in the distribution.
every score in the distribution.
the standard scores in the distribution.
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Question 20
Multiple Choice