Introduction to Epidemiology 6th Edition by Ray M Merrill

Exercise 19

Suppose the correlation coefficient measuring the strength of the linear association between exercise (in hours per week) and pulse (per minute) for 1,000 study participants is –0.3. Calculate the coefficient of determination and interpret both these measures.

Step 1 of 3

Correlation coeffici ent is usually abbreviated as and is the measure of strength of relationship amongst the two variables. These two variables relationship is also known to be as Pearson correlation. In this method, there is an assumption that a both the variables are distributed normally and also the association or relationship is linear. The value of correlation coefficient is between to.