Figure 1:
Sample size versus
l
o
g
𝑀
(base 10) to detect effect sizes
Δ
=
0
.
5
,
1
or 2 with
1
−
𝛽
=
9
0
%
power at the familywise significance level
𝛼
=
5
%
, when Bonferroni adjustment is used. The open circles represent the sample sizes calculated based on exact normal quantiles (
2.2
).