Question

When computing a correlation coefficient, if you have the degrees of freedom of 55, your sample size must be:

Answer 1

Answer: Your sample size must be 57 .

Explanation:

• The degrees of freedom of a data describes the number of data values that are free to vary.

The degrees of freedom(df) require to calculate the correlation coefficient is N-2, where N is the sample size.

If Degrees of freedom(df) is given as 55, then

N-2 =55

Add 2 on both sides , we get

N= 55+2=57

Therefore , the required sample size = 57