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.