Select the methods of finding out correlation from the following. 1. Karl Pearson’s Method 2. Spearman’s Rank Method 3. Yule’s Method 4. Coefficient of Contingency 5. Concurrent Deviation Method Select the correct answer:

The correct answer is A. 1, 2 and 3.

Karl Pearson’s method is a parametric method of correlation that uses the Pearson correlation coefficient, which is a measure of the linear correlation between two variables. Spearman’s rank method is a non-parametric method of correlation that uses the Spearman rank correlation coefficient, which is a measure of the monotonic correlation between two variables. Yule’s method is a non-parametric method of correlation that uses the Yule’s coefficient of association, which is a measure of the association between two variables. The coefficient of contingency is a measure of the association between two categorical variables. The concurrent deviation method is not a method of correlation.

Karl Pearson’s method is the most common method of correlation. It is a parametric method, which means that it assumes that the data are normally distributed. Spearman’s rank method is a non-parametric method, which means that it does not make any assumptions about the distribution of the data. Yule’s method is also a non-parametric method. The coefficient of contingency is a measure of the association between two categorical variables. It is not a measure of the correlation between two variables. The concurrent deviation method is not a method of correlation.