Question: 1. Identify each variable as quantitative or qualitative. (a) amount of time it takes to assemble a simple puzzle quantitative qualitative (b) number of students

Identify each variable as quantitative or qualitative.

(a)

amount of time it takes to assemble a simple puzzle

quantitative

qualitative

(b)

number of students in a first-grade classroom

quantitative

qualitative

(c)

rating of a newly elected politician (excellent, good, fair, poor)

quantitative

qualitative

(d)

state in which a person lives

quantitative

qualitative

A data set consists of the ages at death for each of the 38 past presidents of the United States now deceased.

(a)

Is this set of measurements a population or a sample?

population

sample

(b)

What is the variable being measured?

number of presidents

whether or not a president has died

country

age at death

(c)

Is the variable in part (b) quantitative or qualitative?

quantitative

qualitative

A manufacturer of jeans has plants in California, Arizona, and Texas. A group of 25 pairs of jeans is randomly selected from the computerized database, and the state in which each is produced is recorded below.

CA	AZ	AZ	TX	CA
AZ	TX	CA	CA	CA
CA	AZ	AZ	TX	TX
AZ	TX	AZ	CA	TX
TX	TX	AZ	CA	CA

(a) What is the experimental unit?

database

state

manufacturing speed

pair of jeans

manufacturing plants

(b) What is the variable being measured?

database

manufacturing plants

state

pair of jeans

manufacturing speed

Is it qualitative or quantitative?

qualitative

quantitative

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