Question

Compute the co-efficient of correlation between X-advertisement expenditure and Y-sales. X : 10 12 18 8 13 20 22 15 5 17 Y : 88 90 94 86 87 92 96 94 88 85

Answer 1

Answer:

. X, Y, X2, Y2, XY. 10 12 8 15 20 25 40, 15 10 6 25 16 12 8, 100 144 64 225 400 ... 64 16, 90 24 54 90 132 169 88 36. ∑X=80, ∑Y=64, ∑X2=832, ∑Y2=584, ∑XY=683 ... (Y), X2, Y2, XY. 10 25 13 25 22 11 12 25 21 20, 12 22 16 15 18 18 17 23 24 17

Explanation:

Answer 2

Answer:

The Co-efficient of correlation between X and Y is  1.84

Explanation:

Correlation shows the relationship between two variable.

Here we use Karl Pearson correlation formula:

Please refer photo for better explanation of solution  

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