Hosea is studying the relationship between caffeine consumption and problem-solving ability. Which of the following is a categorical way to operationalize caffeine consumption?
A)The number of cups of coffee consumed in a day
B)The number of milligrams of caffeine consumed during the study
C)The frequency of buying energy drinks
D)Whether the participant drank a soda in the 24 hours prior to the study

Question

Quizplus · Accepted Answer

Categorical variables are those that can be divided into groups, rather than numerical values. Option D, which classifies participants based on whether they drank a soda in the 24 hours prior to the study, is categorical because it divides participants into two groups: those who did and those who did not drink soda. The other options (A, B, C) involve counting or measuring and are therefore numerical.

Hosea Is Studying the Relationship Between Caffeine Consumption and Problem-Solving