STATISTICS FOR PEOPLE WHO THINK
THEY HATE STATISTICS 7TH EDITION
SALKIND FREY COMPREHENSIVE EXAM
SET QUESTIONS WITH CORRECT ANSWERS
2026
⩥ descriptive statistics. Answer: used to organize and describe the
characteristics of a collection of data.
⩥ data set/data. Answer: the collection of descriptive statistics.
⩥ inferential statistics. Answer: used to make inferences from a smaller
group of data to a possibly larger one.
⩥ average. Answer: the one value that best represents an entire group of
scores.
⩥ measures of central tendency. Answer: another way of saying averages
with three branches: mean, median, and mode.
⩥ mean and formula. Answer: the most common type of average that is
the sum of all the values in a group, divided by the number of values in
that group. X=EX/n
,⩥ arithmetic mean. Answer: the point about which the sum of the
deviations is equal to zero.
⩥ median. Answer: the midpoint in a set of scores.
⩥ percentile points. Answer: used to define the percentage of cases equal
to and below a certain point in a distribution or a set of score.
⩥ skew. Answer: significantly distort the result.
⩥ outliers. Answer: extreme scores.
⩥ mode. Answer: the value that occurs most frequently.
⩥ data points. Answer: observations displayed on a graph or chart.
⩥ SPSS. Answer: Statistical Package for the Social Science.
⩥ variability. Answer: reflects how scores differ from one another (ex.
7,6,3,3,1).
, ⩥ standard deviation (s or SD). Answer: represents the average amount
of variability in a set of scores.
⩥ mean deviation. Answer: the sum of the absolute value of the
deviations from the mean divided by the number of scores.
⩥ unbiased estimate. Answer: an estimate of the populations standard
deviation.
⩥ variance. Answer: the standard deviation squared which measures
variability in statistical measures.
⩥ frequency distribution. Answer: a method of tallying and representing
how often certain scores occur. the number of times a score occurs in the
raw data
⩥ class interval. Answer: a range of numbers also the difference between
the upper class interval and the lower class interval.
⩥ histogram. Answer: a visual representation of the frequency
distribution where the frequencies are represented by bars.
⩥ midpoint. Answer: the middle point in the interval. just add the top
and bottom values of the class interval and divide by 2; For example, the
midpoint of the class interval 0-4 is the average of 0 and 4, or 4/2 = 2
THEY HATE STATISTICS 7TH EDITION
SALKIND FREY COMPREHENSIVE EXAM
SET QUESTIONS WITH CORRECT ANSWERS
2026
⩥ descriptive statistics. Answer: used to organize and describe the
characteristics of a collection of data.
⩥ data set/data. Answer: the collection of descriptive statistics.
⩥ inferential statistics. Answer: used to make inferences from a smaller
group of data to a possibly larger one.
⩥ average. Answer: the one value that best represents an entire group of
scores.
⩥ measures of central tendency. Answer: another way of saying averages
with three branches: mean, median, and mode.
⩥ mean and formula. Answer: the most common type of average that is
the sum of all the values in a group, divided by the number of values in
that group. X=EX/n
,⩥ arithmetic mean. Answer: the point about which the sum of the
deviations is equal to zero.
⩥ median. Answer: the midpoint in a set of scores.
⩥ percentile points. Answer: used to define the percentage of cases equal
to and below a certain point in a distribution or a set of score.
⩥ skew. Answer: significantly distort the result.
⩥ outliers. Answer: extreme scores.
⩥ mode. Answer: the value that occurs most frequently.
⩥ data points. Answer: observations displayed on a graph or chart.
⩥ SPSS. Answer: Statistical Package for the Social Science.
⩥ variability. Answer: reflects how scores differ from one another (ex.
7,6,3,3,1).
, ⩥ standard deviation (s or SD). Answer: represents the average amount
of variability in a set of scores.
⩥ mean deviation. Answer: the sum of the absolute value of the
deviations from the mean divided by the number of scores.
⩥ unbiased estimate. Answer: an estimate of the populations standard
deviation.
⩥ variance. Answer: the standard deviation squared which measures
variability in statistical measures.
⩥ frequency distribution. Answer: a method of tallying and representing
how often certain scores occur. the number of times a score occurs in the
raw data
⩥ class interval. Answer: a range of numbers also the difference between
the upper class interval and the lower class interval.
⩥ histogram. Answer: a visual representation of the frequency
distribution where the frequencies are represented by bars.
⩥ midpoint. Answer: the middle point in the interval. just add the top
and bottom values of the class interval and divide by 2; For example, the
midpoint of the class interval 0-4 is the average of 0 and 4, or 4/2 = 2
