Your CEO has followed your advice and now wants you to measure effect sizes. You report a Pearson's r of 0.50 for the impact of Unblock Me Now drain cleaner on reducing drain blockage time. Your CEO wants to know if this is bad, as she remembers that a p-value of 0.30 is not good. What do you tell her?

Question

Business

Dwayne Vaughan

8 October, 21:25

Your CEO has followed your advice and now wants you to measure effect sizes. You report a Pearson's r of 0.50 for the impact of Unblock Me Now drain cleaner on reducing drain blockage time. Your CEO wants to know if this is bad, as she remembers that a p-value of 0.30 is not good. What do you tell her?

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Rogelio Kelley · Answer 1

P-value and Pearson r both are unrelated

Explanation:

Pearson r value is used to measure the correlation between two variables and the p-value is used to measure the relationship both are different in many ways. The reported Pearson r value is 0.50 which is good enough to launch the project. Effect size and p-value are no related and the CEO should not worry about the results.