Check the Show Groups box. You can also check the Boxplots box to overlay those as well. Report the means, standard deviations, and sample sizes for the change in BMI amounts for each diet.. Summary statistics: n Mean SD LEAR 79 -0.92 2.00 Orni 76 -0.77 2.14 Zone 79 -0.53 2.00 Atki 77 -1.65 2.54 pooled 311 -0.97 2.18 Statistic: Observed Mean Group Diff = 0.585