unequal n's: quadratic weights

[K. Bloom]

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.

Thank you, Kathleen Bloom




=================================================================
Instructions for joining and leaving this list and remarks about
the problem of INAPPROPRIATE MESSAGES are available at
                  http://jse.stat.ncsu.edu/
=================================================================