General Mathematics · Unit 3 · Bivariate data analysis 1 · Identifying and describing associations between two numerical variables

Describe an association between two numerical variables in terms of direction (positive/negative), form (linear/non-linear) and strength (strong/moderate/weak).

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Question 1

A researcher collects data on the number of hours spent exercising per week and resting heart rate (in beats per minute) for a sample of adults. The correlation coefficient for this data is r = -0.862. Describe the association between hours of exercise and resting heart rate in terms of direction, form and strength.

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