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Refer to the Baseball 2007 data, which report information
Chapter 1, Problem 21E(choose chapter or problem)
Problem 21E
Refer to the Baseball 2007 data, which report information on the 30 Major League Baseball teams for the 2007 season. Consider the following variables: number of wins, team salary, season attendance, whether the team played its home games on a grass field or an artificial surface, and the number of home runs hit.
a. Which of these variables are quantitative and which are qualitative?
b. Determine the level of measurement for each of the variables.
Questions & Answers
QUESTION:
Problem 21E
Refer to the Baseball 2007 data, which report information on the 30 Major League Baseball teams for the 2007 season. Consider the following variables: number of wins, team salary, season attendance, whether the team played its home games on a grass field or an artificial surface, and the number of home runs hit.
a. Which of these variables are quantitative and which are qualitative?
b. Determine the level of measurement for each of the variables.
ANSWER:
Answer:
Step 1 of 2:
(a)
We are asked to find the variables which are quantitative and which are qualitative.
We have given the following variables: number of wins, team salary, season attendance, whether the team played its home games on a grass field or an artificial surface, and the number of home runs hit.
When the characteristic being studied is nonnumeric, it is called a qualitative variable or an attribute.
Examples of qualitative variable are gender, religious affiliation etc.
When the variable studied can be reported numerically, the variable is called a quantitative variable.
Examples of quantitative variables are the balance in your checking account, the ages of company presidents, the life of an automobile battery (such as 42 months) etc.
By using definition we can identify the type of variables for given question which is,
Qualitative variable - the team played its home games on a grass field or an artificial surface.
Quantitative variable - number of wins, team salary, season attendance, and the number of home runs hit.