Question

Calculate the coefficient of correlation from the following data X 22 35 13 19 33 58 31 22 29 Y 27 34 32 24 33 48 29 25 29

Answer 1

Meaning: Correlation means a relation between two or more things.

              => It's a statistical technique which helps us to find out what kind of relation exist between two or more variables.

Steps for calculation of coefficient of  correlation.

Step 1- Calculate the summation of X,Y, square of X, square of Y and XY.

Step 2- Calculate the standard diviation of X and standard diviation of Y.

Step 3- Calculate the  co-variance of XY. COV(X,Y).

Step 4- Find out the coefficient of correlation.