One-Way ANOVA on Minitab
ANOVA commands are on the Stat menu.
If the data (that is, all values of the response variable) are all in one
column ("stacked"), use Oneway. Enter the appropriate columns for Response
and Factor and click "OK." You will get out the analysis of variance
table and Individual 95% confidence intervals for the means, based on the
pooled standard deviation. These are "character plots" (made with ordinary
typing characters such as + and -), rather than graphics. This means that
they can be copied easily to a word processor -- but they may need adjusting
and aligning if the font changes.
If the data for different levels are in different columns, then you can
use the "Oneway (Unstacked)" command.