Launch Excel and load the spreadsheet containing the data you want to plot. Select the first set of X and Y axis data for your chart. Click the "Insert" tab, and then select the chart type and sub ...

For example, you could show line graphs for temperature and humidity on top of each other. For this purpose, Excel lets you add a series of data to a chart and plot it on a second y-axis.

The idea is I have two datasets. I have: Subject1: Days passed, Value Subject2: Days passed, Value I want to plot those on the same chart to compare their trends against each other. Days passed on ...