how to learn karl pearson formulas ? any trick ? In economics

Dear Student,
There is no such trick to learn formulas of Karl Pearson of correlation. But you can learn them by keeping them in mind and revising them by writing again and again. And if nothing is mentioned in the question regarding use of specific method for question than you can solve this by using simple formula. Following the formulas of Karl Pearson from various methods:


Regards,
 

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