Congratulations! You have made your first graph. Finally, as described in the sigma plot menu, we will use the mouse to select columns corresponding to our X series (if XY pairs), Y series, and Error terms. Given that our X-axis consists of incrementing integers (number of days), we can select Single Y and allow SigmaPlot to fill in the integers for each day (1-21) or we can select XY pairs and use a column we have filled with numbers 1-21 (col 1, above). Having selected our graph, we designate in the first menu that our data are arranged in columns and then (for this example) can select either that we have "XY pairs" or a "Single Y" in the subsequent menu. We will use this to plot the average body weight of rats across days of an experiment. For the above example we have chosen a "Simple Line & Scatter- Error Bars". Once you have selected a plot, follow the prompts to select your data.
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