Which of the Following Is False?
A) $\hat{ S }$ Is Used to Estimate

Multiple Choice

Which of the following is false?

A) $\hat{ S }$ is used to estimate $\sigma$ .
B) $\hat { S }$ uses N - 1 in the denominator
C) $\hat { S }$ < $\sigma$ when both are calculated on the same numbers
D) $\hat{ S }$ is based on a sample.