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Chapter 1: Problem 15

Indicate which of the following variables are quantitative and which are qualitative. a. The amount of time a student spent studying for an exam b. The amount of rain last year in 30 cities c. The arrival status of an airline flight (early, on time, late, canceled) at an airport d. A person's blood type e. The amount of gasoline put into a car at a gas station

Short Answer

Expert verified
Quantitative variables: a) Time a student spent studying for an exam, b) Amount of rainfall last year in 30 cities, and e) Amount of gasoline put into a car at a gas station. Qualitative variables: c) Arrival status of an airline flight, and d) A person's blood type

Step by step solution

01

Classifying Variable a

The amount of time a student spent studying for an exam can be measured in hours, minutes, or seconds. Therefore, it is a quantitative variable.
02

Classifying Variable b

The amount of rainfall last year in 30 cities can be measured in units such as inches or millimeters. Therefore, it is a quantitative variable.
03

Classifying Variable c

The arrival status of an airline flight (early, on time, late, canceled) at an airport is a non-numerical category that cannot be measured numerically. Therefore, it is a qualitative variable.
04

Classifying Variable d

A person's blood type (A, B, AB, O) is a non-numerical category that cannot be measured numerically. Therefore, it is a qualitative variable.
05

Classifying Variable e

The amount of gasoline put into a car at a gas station can be measured in gallons or liters. Therefore, it is a quantitative variable.

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