On Tue, 30 Jan 2001 19:53:03 -0500, "K. Bloom" <[EMAIL PROTECTED]>
wrote:
>Could someone please tell me how to calculate quadratic coefficients for
>unequal sample sizes (equal intervals, three groups)? The formula is not in
>the SPSS algorithm notes.
Maybe I'm misunderstanding the question, but if you only have 3
groups, your estimates will interpolate the group means. Just solve
the 3 linear equations in 3 unknowns, using whatever equation solving
method you like.
Duncan Murdoch
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