Question 1 - Pearson Correlation — r = sxy/(sx·sy), computing from summary statistics Practice

Question 1

00:00Est. 2 min

Marks:+2.000.00

A company studied the relationship between advertising expenditure (

X

) and sales revenue (

Y

) across 12 months. Summary statistics are given. Also, the sum of product of deviations of

X

and

Y

from their respective means is 160. Compute the correlation coefficient between advertising expenditure and sales revenue. Enter the answer correct to one decimal place. Question illustration

Integer answer

Medium Difficulty

26 October 2025

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