Calculate coefficient of correlation between age of wives and age of husbands.

Calculate coefficient of correlation between series A and B.

Calculate coefficient of correlation between series X and Y.

Calculate the coefficient of correlation between the two series :

From the following data, relating to playing habits in various age group of 900 students . Calculate cor=efficient of correlation between age group and playing habits:

Calculate the coefficient of rank correlation.

Calculate cofficient of correlation of the age of husband and wife using Karl Person's method.