Question 1

Which of the following best describes a variable that is measured in hours, such as 'the number of hours a student slept last night'?

Accepted Answer

Quantitative — Continuous

Question 2

A researcher collects data on students’ ratings of a course as 'poor', 'fair', 'good', or 'excellent'. How should this variable be classified?

Accepted Answer

Qualitative — Ordinal

Question 3

Which of the following is an example of a discrete variable?

Accepted Answer

The number of siblings a student has

Question 4

A ZIP code is best classified as which type of variable?

Accepted Answer

Qualitative — Nominal

Question 5

Which of the following variables is both qualitative and ordinal?

Accepted Answer

A student’s class year (first-year, sophomore, junior, senior)

Question 6

Suppose you are measuring the amount of rainfall in inches over a month. How should this variable be classified?

Accepted Answer

Quantitative — Continuous

Question 7

Which of the following best describes the variable 'on-campus housing available (yes/no)'?

Accepted Answer

Qualitative — Nominal

Question 8

A student is comparing colleges and records the typical class size for each. What type of variable is 'class size'?

Accepted Answer

Quantitative — Discrete

Question 9

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

Accepted Answer

A student’s major

Question 10

If a variable describes categories with a natural order, how should it be classified?

Accepted Answer

Qualitative — Ordinal

Question 11

Which of the following best describes the variable 'cost of tuition'?

Accepted Answer

Quantitative — Continuous

Question 12

A survey asks respondents to select their region (Northeast, Midwest, South, West). How should this variable be classified?

Accepted Answer

Qualitative — Nominal

Question 13

Which of the following variables is most likely to be measured rather than counted?

Accepted Answer

A student’s height

Question 14

A business wants to know the number of products sold each day. What type of variable is this?

Accepted Answer

Quantitative — Discrete

Question 15

Which of the following is a key difference between discrete and continuous variables?

Accepted Answer

Discrete variables are counted, continuous variables are measured.

Question 16

A researcher records the number of cars passing through an intersection each hour. How should this variable be classified?

Accepted Answer

Quantitative — Discrete

Question 17

Which of the following best describes the variable 'student’s class year (first-year, sophomore, junior, senior)'?

Accepted Answer

Qualitative — Ordinal

Question 18

A hospital records the body temperature of patients in degrees Celsius. How should this variable be classified?

Accepted Answer

Quantitative — Continuous

Question 19

Which of the following is NOT a characteristic of a nominal variable?

Accepted Answer

Values are measured

Question 20

A survey asks respondents to indicate their satisfaction level as 'unsatisfied', 'neutral', or 'satisfied'. How should this variable be classified?

Accepted Answer

Qualitative — Ordinal

Introduction to Variables and Data Classification in Statistics

스터디 가이드 - 연습 문제