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14 1 From t-test to one-way anovaYou can click on the Means Plotsbutton to open the ANOVA MeansPlots menu. This allows you tochoose how you want to plot themeans, and how you want torepresent their standard errors. InFigure 1.11 we have chosen to plotpoints for the means, with a bar toshow the s.e.d. (see Figure 1.12).You would plot lines if thetreatments represented differentamounts of some quantity such as a Figure 1.11fertilizer, a drug or a dietarysupplement. Plotting the data values (as well as the means) can provide a visualconfirmation of the significance (or non-significance) of the treatment effects reportedin the analysis-of-variance table. The final possibility is to plot the means as a bar chart.1.4 PracticalFigure 1.12Do a one-way analysis of variance for the data in Pots.gsh and compare the results withthose from the t-test. Plot the means, and also plot the data values. Does the plot with thedata values confirm what you have found in the analysis of variance?