CHLD-3301.793 Introductory Statistics Week 1–7 Exam Study Guide 2025
Men's t-shirt sizes are classified as small, medium, large, extra large, and double extra large. This is an
example of measurement on a nominal scale. - (answer)False
If a set of exam scores forms a negatively skewed distribution, it suggests that the majority of the
students scored well on the exam (where higher scores indicate better performance). - (answer)True
The tools of descriptive statistics enable one to simplify, summarize, and organize data. - (answer)True
After measuring a sample of individuals, a researcher finds that one participant's score is bigger than
another participant's score, but the researcher can't specify how much bigger. The measurements must
come from a(n) ____ scale. - (answer)Ordinal
The class of statistical techniques that summarize, organize, and simplify data are classified as
____________. - (answer)descriptive statistics
A researcher is interested in the average of time that 9th grade boys in the United States spend playing
video games. The entire group of 9th grade male students in the U.S.A. is an example of a _________. -
(answer)population
The major advantage of constructing a frequency polygon instead of a histogram is that two or more
distributions may be easily depicted on the same set of axes when you use the polygon rather than bars.
- (answer)True
In the frequency distribution where X refers to quiz scores (the number correct), how many individuals
took the quiz?
XF
15 12
14 11
13 5
12 0
,CHLD-3301.793 Introductory Statistics Week 1–7 Exam Study Guide 2025
11 2 - (answer)30
Rating a group of large metropolitan cities in the USA in terms of "quality of life" using ratings of
1, 2, 3, 4, and 5, with "1" reflecting the lowest quality and "5" reflecting the highest quality, would be an
example of measurement on a(n) ____________ scale of measurement. - (answer)Ordinal
The ____________ is most useful for nominal data, whereas the median is more useful with
____________ data. - (answer)Mode, Skewed
If the highest score in a distribution is X = 12 and the lowest score is X = 4, then the range is 9 points. -
(answer)True
The mean is considered to be the "midpoint" for a distribution because exactly half of the scores are
located above the mean and exactly half are below the mean. - (answer)False
Since extreme values in a distribution do not affect the median, the __________ is preferred with
interval/ratio data when the data are extremely skewed. - (answer)median
The standard deviation is closely related to the variance. In fact, the standard deviation is the
____________ of the variance. - (answer)square root
A researcher measures personality for a sample of n = 50 people and classifies each person as either
Type A, Type B, or Type C personality. Which measure of central tendency would be appropriate to
summarize these measurements? - (answer)mode
What value is obtained if you add all the deviations from the mean for a population, then divide the sum
by N? - (answer)You will always get zero
Which of the following is true for a normal distribution? - (answer)The mean, median and mode are all
equal
, CHLD-3301.793 Introductory Statistics Week 1–7 Exam Study Guide 2025
In general, what is the relationship between the standard deviation and variance? - (answer)The
standard deviation is the square root of the variance
A teacher gave a reading test to a class of 5th-grade students and computed the mean, median, and
mode for the test scores. Which of the following statements is the only accurate description of the
scores that can be made? - (answer)Half of the students had scores equal to or above the median
The scores below are the heights, in inches, of number of grandchildren that elderly adults in an assisted
living home moved have.
Scores: 66, 68, 65, 67, 69, 66, 68, 68, 70, 65, 65
For these data, calculate the population variance, . Round to the nearest tenths place if a fraction. The
variance is: - (answer)2.7
The scores below are the number of cups of coffee one Google employee drank per day in a 7-day week.
The number of cups a Google employee
consumed per day for seven days: 5, 4, 8, 5, 9, 2, 4
For these data, calculate the standard deviation, ơ. Round to the nearest tenths place if a fraction. The
standard deviation is: - (answer)2.2
The scores below are the numbers of dogs that nine "dog-loving" families have:
Dogs in the family: 5, 7, 8, 6, 4, 3, 2, 6, 5
For these data, calculate the mode. - (answer)5&6
The scores below are the number of students who call in sick to a local elementary school during flu
season, each day for one week, beginning Monday through Friday.
Men's t-shirt sizes are classified as small, medium, large, extra large, and double extra large. This is an
example of measurement on a nominal scale. - (answer)False
If a set of exam scores forms a negatively skewed distribution, it suggests that the majority of the
students scored well on the exam (where higher scores indicate better performance). - (answer)True
The tools of descriptive statistics enable one to simplify, summarize, and organize data. - (answer)True
After measuring a sample of individuals, a researcher finds that one participant's score is bigger than
another participant's score, but the researcher can't specify how much bigger. The measurements must
come from a(n) ____ scale. - (answer)Ordinal
The class of statistical techniques that summarize, organize, and simplify data are classified as
____________. - (answer)descriptive statistics
A researcher is interested in the average of time that 9th grade boys in the United States spend playing
video games. The entire group of 9th grade male students in the U.S.A. is an example of a _________. -
(answer)population
The major advantage of constructing a frequency polygon instead of a histogram is that two or more
distributions may be easily depicted on the same set of axes when you use the polygon rather than bars.
- (answer)True
In the frequency distribution where X refers to quiz scores (the number correct), how many individuals
took the quiz?
XF
15 12
14 11
13 5
12 0
,CHLD-3301.793 Introductory Statistics Week 1–7 Exam Study Guide 2025
11 2 - (answer)30
Rating a group of large metropolitan cities in the USA in terms of "quality of life" using ratings of
1, 2, 3, 4, and 5, with "1" reflecting the lowest quality and "5" reflecting the highest quality, would be an
example of measurement on a(n) ____________ scale of measurement. - (answer)Ordinal
The ____________ is most useful for nominal data, whereas the median is more useful with
____________ data. - (answer)Mode, Skewed
If the highest score in a distribution is X = 12 and the lowest score is X = 4, then the range is 9 points. -
(answer)True
The mean is considered to be the "midpoint" for a distribution because exactly half of the scores are
located above the mean and exactly half are below the mean. - (answer)False
Since extreme values in a distribution do not affect the median, the __________ is preferred with
interval/ratio data when the data are extremely skewed. - (answer)median
The standard deviation is closely related to the variance. In fact, the standard deviation is the
____________ of the variance. - (answer)square root
A researcher measures personality for a sample of n = 50 people and classifies each person as either
Type A, Type B, or Type C personality. Which measure of central tendency would be appropriate to
summarize these measurements? - (answer)mode
What value is obtained if you add all the deviations from the mean for a population, then divide the sum
by N? - (answer)You will always get zero
Which of the following is true for a normal distribution? - (answer)The mean, median and mode are all
equal
, CHLD-3301.793 Introductory Statistics Week 1–7 Exam Study Guide 2025
In general, what is the relationship between the standard deviation and variance? - (answer)The
standard deviation is the square root of the variance
A teacher gave a reading test to a class of 5th-grade students and computed the mean, median, and
mode for the test scores. Which of the following statements is the only accurate description of the
scores that can be made? - (answer)Half of the students had scores equal to or above the median
The scores below are the heights, in inches, of number of grandchildren that elderly adults in an assisted
living home moved have.
Scores: 66, 68, 65, 67, 69, 66, 68, 68, 70, 65, 65
For these data, calculate the population variance, . Round to the nearest tenths place if a fraction. The
variance is: - (answer)2.7
The scores below are the number of cups of coffee one Google employee drank per day in a 7-day week.
The number of cups a Google employee
consumed per day for seven days: 5, 4, 8, 5, 9, 2, 4
For these data, calculate the standard deviation, ơ. Round to the nearest tenths place if a fraction. The
standard deviation is: - (answer)2.2
The scores below are the numbers of dogs that nine "dog-loving" families have:
Dogs in the family: 5, 7, 8, 6, 4, 3, 2, 6, 5
For these data, calculate the mode. - (answer)5&6
The scores below are the number of students who call in sick to a local elementary school during flu
season, each day for one week, beginning Monday through Friday.
