User Guide

374
Chapter 21
One-Wa y ANOV
A Options
Figure 21-5
One-Way ANOVA Options dialog box
Statistics. Choose one or more of the following:
 Descriptive. Calculates the number of cases, mean, standard deviation, standard
error of the mean, minimum, maximum, and 95%-confidence intervals for each
depende
nt variable for each group.
 Fixed a
nd random effects.
Displays the standard deviation, standard error, and
95%-confidence interval for the fixed-effects model, and the standard error,
95%-confidence interval, and estimate of between-components variance for the
random
-effects model.
 Homog
eneity of variance test.
Calculates the Levene statistic to test for the equality
of group variances. This test is not dependent on the assumption of normality.
 Brown-Forsythe. Calculates the Brown-Forsythe statistic to test for the equality of
group means. This statistic is preferable to the F statistic when the assumption of
equal v
ariances does not hold.
 Welch
.
Calculates the Welch statistic to test for the equality of group means. This
statistic is preferable to the F statistic when the assumption of equal variances
does not hold.
Means plot. Displays a chart that plots the subgroup means (the means for each group
defin
ed by values of the factor variable).
Missing Values. Controls the treatment of missing values.