# CFA Formulas App

Using this app, you can learn your CFA level 1 & level 2 formulas anytime and anywhere. Now – the Formulas App is in its trial mode – which means only a few formulas get generated. To gain unlimited access to our Free CFA Formulas App you need to set up your account.

## Free CFA Formulas Appinside Your Free Personalized Study Plan:

(4 mini-steps only)

The Spearman Rank Correlation Coefficient
Click to show formula

$r_{s} = 1-\frac{6\times \Sigma^{n}_{i=1}d^{2}_{i}}{n\times (n^{2}-1)}$

• $r_{s}$ - the Spearman rank correlation coefficient
• $d_{i}$ - the difference between the ranks of each pair of observations on X and Y
• $n$ - the number of observations