SOA #49 vs TI-30xs multi


So I plug this into the data table, check the 1-var and see that:
Sx=Error
sigma^2 = 0.96

Sx^2 is usually the unbiased estimate of the variance but in this case we have the population's frequency so sigma^2 is the true variance. Then the question wants us to compute the variance using the estimator which is equivalent to using the true variance 0.96 but treating it like it was originally computed as a n-1 unbiased sample variance.

Is this reasoning correct?


SOA #49 vs TI-30xs multi