Spearman’s Rank

Question 1

When to use Spearman’s Rank instead of PMCC?

Answer 1

• When there is no underlying population to data
• When data is not from a parent bivariate normal distribution

Question 2

What can Spearman’s rank do that PMCC can’t?

Answer 2

• deal with subjective data eg. Ratings
• deal with non numerical data eg. A,B,C,D,E
• deal with non linear situations

Question 3

What is the fundamental difference between PMCC and Spearman’s Rank?

Answer 3

• Spearman’s rank compares ranks given instead of raw data