Question 1

A Likert-type scale is an additive index of five- or seven-point value ordinal variables.

Accepted Answer

A) True 
 B)False  True

Question 2

A histogram shows the percentage or frequency of cases falling into intervals of the variable.

Accepted Answer

A) True 
 B)False  True

Question 3

A table listing how many respondents to a survey reside in each state is called a ______.

Accepted Answer

A)   bar graph
B)   pie chart
C)   region table
D)   frequency distribution D

Question 4

A variable is an empirical measurement of a characteristic.

Accepted Answer

A) True 
 B)False

Question 5

In a study of the number of cups of coffee students drink while preparing for an exam a researcher learns that the median number of cups is 2, but the mean number of cups is 2.9. This indicates the mean is ______.

Accepted Answer

A)   positively skewed
B)   negatively skewed
C)   perfectly symmetric
D)   not skewed

Question 6

A percentile reports the percentage of cases in a distribution ______.

Accepted Answer

A)   above a given value
B)   at a given value
C)   at or below a given value
D)   below a given value

Question 7

A researcher wants to measure individual support of internationalism so she creates an additive index or index consisting of multiple ordinal-level variables measuring attitudes on the U.N., foreign policy, foreign aid, and foreign intervention.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is the most resistant measure of central tendency to skew?

Accepted Answer

A)   median
B)   mode
C)   mean
D)   dispersion

Question 9

The median value of a variable is ______.

Accepted Answer

A)   the most commonly occurring value
B)   the average value
C)   the upper limit value
D)   the middle value

Question 10

A researcher who wants to learn the precise differences between his or her units of analysis will likely use a(n) ______-level variable to code the characteristics.

Accepted Answer

A)   nominal
B)   ordinal
C)   interval
D)   ratio

Question 11

Mean, median, and mode are all measures of dispersion.

Accepted Answer

A) True 
 B)False

Question 12

Age, measured in years, is an example of a(n) ______-level variable.

Accepted Answer

A)   nominal
B)   ordinal
C)   interval
D)   ratio

Question 13

A researcher studies presidential approval polls and finds the following values: 46, 46, 48, 49, 51, and 52. What is the mean approval rating?

Accepted Answer

A)   46
B)   48
C)   48.67
D)   50

Question 14

Age, measured in years, is an example of a nominal-level variable.

Accepted Answer

A) True 
 B)False

Question 15

______ variables are measured with more precision than ______ variables.

Accepted Answer

A)   Ordinal; nominal
B)   Nominal; ordinal
C)   Interval; ratio
D)   Ratio; interval

Question 16

Dispersion describes the number of categories in a variable.

Accepted Answer

A) True 
 B)False

Question 17

The cumulative percentage records the percentage of cases ______.

Accepted Answer

A)   below a given level
B)   above a given level
C)   at or below a given level
D)   at or above a given level

Question 18

Nominal-level variables are the most precise.

Accepted Answer

A) True 
 B)False

Question 19

A variable that codes each state by the region of the country it is located in is called a nominal-level variable.

Accepted Answer

A) True 
 B)False

Question 20

Education coded as "high school diploma," "some college," "college graduate," and "advanced degree" is an example of a(n) ______-level variable.

Accepted Answer

A)   nominal
B)   ordinal
C)   interval
D)   ratio

Exam 2: Measuring and Describing Variables

A Likert-type scale is an additive index of five- or seven-point value ordinal variables.

A histogram shows the percentage or frequency of cases falling into intervals of the variable.

A table listing how many respondents to a survey reside in each state is called a ______.

A variable is an empirical measurement of a characteristic.

In a study of the number of cups of coffee students drink while preparing for an exam a researcher learns that the median number of cups is 2, but the mean number of cups is 2.9. This indicates the mean is ______.

A percentile reports the percentage of cases in a distribution ______.

A researcher wants to measure individual support of internationalism so she creates an additive index or index consisting of multiple ordinal-level variables measuring attitudes on the U.N., foreign policy, foreign aid, and foreign intervention.

Which of the following is the most resistant measure of central tendency to skew?

The median value of a variable is ______.

A researcher who wants to learn the precise differences between his or her units of analysis will likely use a(n) ______-level variable to code the characteristics.

Mean, median, and mode are all measures of dispersion.

Age, measured in years, is an example of a(n) ______-level variable.

A researcher studies presidential approval polls and finds the following values: 46, 46, 48, 49, 51, and 52. What is the mean approval rating?

Age, measured in years, is an example of a nominal-level variable.

variables are measured with more precision than variables.

Dispersion describes the number of categories in a variable.

The cumulative percentage records the percentage of cases ______.

Nominal-level variables are the most precise.

A variable that codes each state by the region of the country it is located in is called a nominal-level variable.

Education coded as "high school diploma," "some college," "college graduate," and "advanced degree" is an example of a(n) ______-level variable.