The Relationship between Two Quantitative Variables

Question 1

A TV news anchor states that as summer approaches, more and more people are going to the beach.

Revolt · Accepted Answer

✔ time until summer; The explanatory variable is .: time until summer; The response variable is .: number of people going to the beach

Question 2

✔ number of people going to the beachthe season time until summer X the news anchor

Revolt · Accepted Answer

✔ number of people going to the beach

Question 3

Examine the scatterplots provided in this graphic. Then complete the statements.

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Scatterplot A is .: strong and nonlinear; Scatterplot B is .: weak and linear; Scatterplot C is .: strong and linear; Scatterplot D is .: strong and nonlinear

Question 4

The correct scatterplot is .

Revolt · Accepted Answer

B

Question 5

Read the description of the relationship between the following quantitative variables. Identify each relationship as having a positive association, a negative association, or no association.

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✔ positive; Students who study longer tend to earn better grades on their statistics exams. The direction of this relationship is .: positive; A student asks a random sample of 10 of her classmates how tall they are and how many text messages they sent over the past 24 hours. The direction of this relationship is .: no association; People who exercise more frequently tend to have a lower resting heart rate than those who do not exercise as frequently. The direction of this relationship is .: negative

Question 6

positive✔ negativeno association

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✔ negative

Question 7

positivenegative✔ no association

Revolt · Accepted Answer

✔ no association

Question 8

Examine the scatterplots provided in this graphic. Then complete the statements.

Revolt · Accepted Answer

strong and nonlinear; Scatterplot A is .: strong and nonlinear; Scatterplot B is .: weak and linear; Scatterplot C is .: strong and linear; Scatterplot D is .: strong and nonlinear

Question 9

strong and linearstrong and nonlinear✔ weak and linearweak and nonlinear

Revolt · Accepted Answer

✔ weak and linear

Question 10

✔ strong and linearX strong and nonlinearweak and linearweak and nonlinear

Revolt · Accepted Answer

✔ strong and linear

The Relationship between Two Quantitative Variables Answers

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