Probstat/week15 practice 1

This is part of probstat.

Data generation

Generate 5 sets of samples from normal populations, each of size 10, on a spreadsheet software. Make sure that the mean and variance of each set can be modified easily.

Variance estimations

Then compute

$SS_{w}=\sum _{i=1}^{m}\sum _{j=1}^{n}(X_{ij}-{\bar {X}}_{i\centerdot })^{2}$

and

$SS_{b}=n\sum _{i=1}^{m}({\bar {X}}_{i\centerdot }-{\bar {X}}_{\centerdot \centerdot })^{2}$