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Chapter 1: Q 6. (page 8)

Medical study variables Data from a medical study contain values of many variables for each subject in the study. Some of the variables recorded were gender (female or male); age (years); race (Asian, Black, White, or other); smoker (yes or no); systolic blood pressure (millimeters of mercury); level of calcium in the blood (micrograms per milliliter). Classify each variable as categorical or quantitative.

Short Answer

Expert verified

Categorical variable: Gender, Race, Smoker.

Quantitative variable: Age, systolic blood pressure, and level of calcium in the blood.

Step by step solution

01

Step 1. Given information.

The given statement is:

A medical study's data contains values for several factors for each patient.

02

Step 2. Classify each variable in either categorical or quantitative.

A categorical variable assigns a description to each individual, that categorizes them into one of the numerous groups.

Therefore, it will include Gender, Race, Smoker.


A quantitative variable is a set of numerical values that count or measure some aspect of each person.

Therefore, it will include Age, systolic blood pressure, and level of calcium in the blood.

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