Suppose we record the husband’s age and the wife’s age for many randomly selected couples. What would it mean about ages of couples if these two variables had a negative relationship? What would it mean about ages of couples if these two variables had a positive relationship? Which do you think is more likely, a negative or a positive relationship? Do you expect a strong or a weak relationship in the data? Why? Would a strong correlation imply there is an association between husband age and wife age?

Suppose we record the husband’s age and the wife’s age for many randomly selected couples. What would it mean about ages of couples if these two variables had a negative relationship? What would it mean about ages of couples if these two variables had a positive relationship? Which do you think is more likely, a negative or a positive relationship? Do you expect a strong or a weak relationship in the data? Why? Would a strong correlation imply there is an association between husband age and wife age?

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 2AGP

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Question

Suppose we record the husband’s age and the wife’s age for many randomly selected couples.

What would it mean about ages of couples if these two variables had a negative relationship?
What would it mean about ages of couples if these two variables had a positive relationship?
Which do you think is more likely, a negative or a positive relationship?
Do you expect a strong or a weak relationship in the data? Why?
Would a strong correlation imply there is an association between husband age and wife age?

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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