On 21-Oct-03 Bill Shipley wrote:
> Hello. I have come across a curious result that I cannot explain.
> Hopefully, someone can explain this. I am doing a 1-way ANOVA with 6
> groups (example: summary(aov(y~A)) with A having 6 levels). I get an F
> of 0.899 with 5 and 15 df (p=0.51). I then do th
"Bill Shipley" <[EMAIL PROTECTED]> writes:
> Hello. I have come across a curious result that I cannot explain.
> Hopefully, someone can explain this. I am doing a 1-way ANOVA with 6
> groups (example: summary(aov(y~A)) with A having 6 levels). I get an F
> of 0.899 with 5 and 15 df (p=0.51). I
The ANOVA assumes equal variances in the groups. Suppose groups 5 and 6
had much lower variances than groups 1 to 4, and group 6 had a different
mean from the other 5 (which were about equal)?
Given how small the groups apperat to be, this could happen.
On Tue, 21 Oct 2003, Bill Shipley wrote:
