On Tue, 22 Feb 2000, Garabato wrote:
> i need some help with component of variance( VARCOMP).
> I analysed 16 varieties of plants.
> I have a 4*4 lattice experimental design of plants with 4
> replicates. Each of the 16 (4*4) plots contains 12 plants.
> So i have a total of 768 plants.
16 plots with 12 plants per plot accounts for 16x12 = 192 plants.
But you report 4 times as many. Are you multiplying the 192 plants
by the 4 replicates (in which case, what do you mean by "replicates"?) pr
by one of the 4-level factors in the experimental design?
> I want to do analysis of
> components of variance but as they are so many plants
> i could take only 1 measurement (for each character), in each plant.
What is a "character"? One of several dependent variables?
> So when i run varcomp, almost every variance appear in the error, and
> the variance " among plants within plots" is very small.
I take it "varcomp" is the name of some routine in some statistical
package. What package?
> And i don't have the possibility of take the variety-replicate
> interaction. But the truth is that the error is absorbing the most
> of the variance of among plants within plots. Beside, the statistic
> error is not a real error, is the variance between the plants,
> if some error of measurement can exist i think that it can be
> neutralized because of the number of plants( is this correct?).
What components of variance (and their associated numbers of degrees of
freedom) do you think you have, to begin with?
> Finally, i don't know if i can to:
> -assume the error variance don't exist,
> -consider the labeled error component of variance as the among plant
> within the plot, and the labeled among plant, as the interaction?
>
> I hope i have been clear, in order to receive SOME HEEEELP!!!!
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Donald F. Burrill [EMAIL PROTECTED]
348 Hyde Hall, Plymouth State College, [EMAIL PROTECTED]
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