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A nurse is interested in whether there is a relationship between daily levels of stress and likelihood of a heart attack. The stress scores (predictor variable) and risk of heart attack values (criterion variable) from a small sample of participants are depicted below. (Values below are valid for this question only!)
Stress Score Risk of Heart Attack
(Higher values = more stress) (Higher values = greater risk)
8 6
5 0
5 1
1 9
Set up the regression equation and use to predict the risk of heart attack for a person with a stress score of 3. The risk of heart attack predicted for a person with a stress score of 3 is?
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a. Find the values of the median, the lower quartile, and the upper quartile.
Using given data table, find out midpoint for class with greatest frequency?
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