Question

pls solve this question pls calculate the formula also

Answer 1

dx^2.
-352
-276
-276
-192
0
108
108
224
480
480
dy^2 = -144,0,-84,0,0,176,276,384,500,624
dxdy= 32,0,12,0,0,8,12,32,80,96
for dx square you have to multiply dx by x
same for dy square

Answer 2

◆ Karlpearson Pearson Coefficient of Correlation :
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According to karl Pearson, Coefficient of Correlation is determined by dividing the sum of products of deviations from their respective means by their number of pairs and their standard deviations.

It is denoted by the symbol ‛r’.

◆ Calculation
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While calculating coefficient of correlation according to karl Pearson's formula, we can use the following Methods:-

1. Actual Mean Method
2. Direct Method
3. Short-Cut Method/ Assumed Mean Method/Indirect Method
4. Step-Deviation Method.