Dr Guidry Conducts a Study Examining the Relationship Between the Number

question 19

Multiple Choice

Dr. Guidry conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction. She randomly samples 1,500 elderly men and women in Nashville, Tennessee (the state capital) , located in the southern United States. Below are her findings.
•Life satisfaction and experience of daily stress: r =.57 (p = .01)
•Number of friends one has and experience of daily stress: r = .09, not sig.
•Number of friends one has and life satisfaction: r = .36 (p = .04)
Dr) Guidry creates a scatterplot of the relationship between the experience of daily stress and life satisfaction. In doing so, she realizes there are three scores that seem to be very extreme and are nowhere near the other points on the scatterplot. Specifically, it appears that three people report very high levels of daily stress and very low levels of life satisfaction. Which of the following statements is NOT true?

• A)These scores may have strengthened the correlation between these two variables.
• B)These scores are more likely to have an effect because of the large sample size.
• C)These scores are more likely to have an effect because they are extreme on both variables.
• D)These scores may be considered outliers.

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