Exam 2: Measuring and Describing Variables

The percentage of voters who report voting twice a year or less is known as the cumulative percentage.

A distribution with a skinnier left-hand tail is said to have a negative skew.

Which of the following is an example of a measure of central tendency?

Every variable has one name and at least ______ value(s).

Suppose a researcher studying attitudes on gun control finds 40 percent of respondents in favor and 40 percent of respondents opposed and the remaining 20 percent uncertain. The distribution of responses would be referred to as ______.

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

A description of the amount of variation in a variable is called ______.

Which of the following variables has a median value?

A method of describing the dispersion of a variable that includes the minimum value, lower quartile, median, upper quartile, and maximum value is called the interquartile range.

Many nominal and ordinal variables have a singular central tendency that is captured clearly by the mode.

A key feature of an ordinal-level variable is that the values are ______.

Suppose you knew the day of the month on which each of your classmates was born. The most frequently occurring day of birth is called the ______.

Which of the following is an example of a nominal-level variable?

A variable that measures per capita income by state as "low," "medium," or "high" is an interval-level variable.

The ranking in ordinal-level variables is reflected in the variable's numeric codes.