Question

If the sum of squares equals zero, then ________.

1) all the scores in a sample are the same
2) the sample is not representative
3) the sample size is too small
4) the sample is biased

Answer 1

If the sum of squares equals zero, it means that all the scores in the sample are the same.

Step-by-step explanation:

If the sum of squares equals zero, it means that all the scores in the sample are the same. In other words, there is no variability in the data because every score is equal. This can happen when all the measurements are exact duplicates of each other, resulting in a sum of squares of zero.