# Single Factor Analysis of Variance

Six Sigma – iSixSigma Forums Old Forums General Single Factor Analysis of Variance

Viewing 7 posts - 1 through 7 (of 7 total)
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• #42717

Sinnicks
Participant

In a single factor analysis of variance, the assumption of homogeneity of variances applies to:
the variances within the treatment groups
the variance of the treatment means
the total variance
all of the above
and why?

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#135041

Mr IAM
Participant

Are you not done with your little test yet?  This is getting old.

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#135047

Sinnicks
Participant

Then don’t pay attention to my questions!

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#135072

Craig
Participant

It’s does not apply to all variation. This would make no sense. Homogeneous with respect to what?
It can’t be “all of the above” because we just ruled one out.
It can’t be the variance of the treatmement means, because that it what we are evaluating (Between variation divided by within variation). That would make no sense either.
The homogeneity of variance assumption applies to the variance within the groups, and is intended to make sure the natural variation from group to group is essentially the same.

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#135077

Teacher
Member

Honestly Mark, there comes a time to do some work on your own.

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#135081

Dartman_undersiege
Participant

Arrogant Mark,
This is not that way you treat people that educate you on your pursue of statistical knowledge. You have a different way of saying “Thank you”. Don’t bite the hand that feeds you.
To answer your question, ANOVA – (Analysis Of Variance) are so called since it can be use to analyze the variation for each data set with the group, between groups and to the overall data sets. You do this to determine where your variation lays thus for you to locate easily your focus study.
Please dont answer this message. I dont expect something good coming from you.
Dartman_Undersiege

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#135088

Sinnicks
Participant

Thanks so much, I never intended to be arrogant. Actually, I thought the last gentlemen was very arrogant. I appreciate all responses which has greatly helped me understand these various lessons in statistics.
Thanks to everyone for their assistance. I certainly appreciate it.

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Viewing 7 posts - 1 through 7 (of 7 total)

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