Solving for population and sample mean using HP12C.

[Enlighten_me]

To those using HP12C… how do you get the population mean and sample mean?
I think i’ve gotten the population mean, but not the sample mean.

 

[S2000magician]

The calculations are identical: (ΣXi)/n.

 

[Enlighten_me]

S2000magician wrote:
The calculations are identical: (ΣXi)/n.

The formula for sample variance and population variance are the different. Also the formula for sample standard deviation and population standard deviation.
I thought population mean and standard mean would also be different. Anyway, thanks for the help.