1. A researcher collected the number of children per 1000 children under 18 who have been seen in a hospital emergency room due to a severe allergic response during the past 10 years. 2. A researcher claimed that the shortest and the tallest drivers have a greater risk of injuries from airbags than the adults who are near average height.

3. A study claims that the higher a person’s income, the more likely that that a shopper will bring reusable bags to a grocery store. Which term best describes a person’s income?

A example of inferential statistics
B independent variable
C example of descriptive statistics