Answer: Your sample size must be 57 .
Step-by-step 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
