.the formula for the tied rank correlation is;

R=1-[6*(sum of d

Where d is the difference of the ranks of two variables, m is the adding factor and n is the number of observations.

Adding factor=m= 1/12(t

www.revision-notes.co.uk

R=1-[6*(sum of d

^{2 }+m)/n (n^{2}-1)]Where d is the difference of the ranks of two variables, m is the adding factor and n is the number of observations.

Adding factor=m= 1/12(t

^{3}-t) where t is the value numbers of observations tied for a rank.www.revision-notes.co.uk