Which of the following is true about the correlation ()? (There may be more than one correct answer) a. When = 0, there is a strong linear relationship between the two quantitative variables. b. −1 ≤ ≤ 1 c. measures the direction and strength of the linear relationship between two quantitative variables. d. To calculate r, we need to know what the median is. e. does not change when we change the units of measurements of x, y, or both.

Which of the following is true about the correlation ()? (There may be more than one correct answer) a. When = 0, there is a strong linear relationship between the two quantitative variables. b. −1 ≤ ≤ 1 c. measures the direction and strength of the linear relationship between two quantitative variables. d. To calculate r, we need to know what the median is. e. does not change when we change the units of measurements of x, y, or both.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 24PFA

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Question

Which of the following is true about the correlation ()? (There may be more than one correct
answer)

a. When = 0, there is a strong linear relationship between the two quantitative variables.
b. −1 ≤ ≤ 1
c. measures the direction and strength of the linear relationship between two quantitative
variables.
d. To calculate r, we need to know what the median is.
e. does not change when we change the units of measurements of x, y, or both.

Definition Definition Relationship between two independent variables. A correlation tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

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