Question

The correlation coefficient between X and Y is 0.4. What will be the value of

correlation coefficient if 5 is added in each observation of X and 10 is multiplied to

each observation of Y?​

Answer 1

Step-by-step explanation:

1. Step 1: Find the mean of x, and the mean of y.

Step 2: Subtract the mean of x from every x value (call them "a"), and subtract the mean of y from every y value (call them "b")

Step 3: Calculate: ab, a2 and b2 for every value.

Step 4: Sum up ab, sum up a2 and sum up b.

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