Question

If Coefficient of correlation r = 0.5 then coefficient of non-determination is __________.
1. 0.5
2. 0.25
3. 1
4. 0.75

Answer 1

Correct Answer - Option 4 : 0.75

Given

Coefficient of correlation r = 0.5

Formula

Coefficient of determination = r²

Coefficient of non determination = 1 - coefficient of determination

Calculation

r = 0.5

⇒ r² = 0.25

∴ The coefficient of determination = 0.25

∴ The coefficient of non determination is s1 - 0.25 = 0.75