Seven students of teaching Economics in two universities are shown below. Calculate rank difference correlation.

Deviation of two series X and Y are shown . Calculate coefficient of correlation .

Calculate the coefficient of rank correlation.

Seven students of a class secured following marks in economics and history . Calculate cofficient of correlation with the help of these data:

The marks obtained in Mathematics and English are as follows. Calculate Spearman's Coefficient of rank correlations.

In a contest the competitors are awarded marks out of 20 by two judges .The scores of the 10 competitors are given below .Calculate Spearman 's rank correlation .

Ten candidates received percentage marks in two subjects as follows: Calculate Spearman's rank correlation coefficient and interpret your result.