How do I create a chart in Excel that has two Y-axes and one shared X-axis in Excel 2007
First, select the Insert tab from the toolbar at the top of the screen. In the Charts group, click on the Column button and select the first chart (Clustered Column) under 2-D Column.
To do this, highlight cells A2 to A7 then type a comma, then highlight cells C2 to C7, then type another comma, and the highlight cells E2 to E7. You should see the following in your Chart data range box:
=Sheet1!$A$2:$A$7,Sheet1!$C$2:$C$7,Sheet1!$E$2:$E$7
Click on the OK button.
Now when you view the chart, you should see that Series 2 has changed to a line graph. However, we still need to set up a secondary Y-axis as Series 2 is currently using the primary Y-axis to display its data.
To do this, right-click on one of the data points for Series 2 and select "Format Data Series" from the popup menu.
When the Format Data Series window appears, select the "Secondary Axis" radio button. Click on the Close button.
Now, if you want to add axis titles, select the chart and a Layout tab should appear in the toolbar at the top of the screen.
Click on the Layout tab. Then select Axis Titles > Primary Horizontal Axis Title > Title Below Axis.
Next, under the Layout tab in the toolbar, select Axis Titles > Primary Vertical Axis Title > Horizontal Title.
Next, under the Layout tab in the toolbar, select Axis Titles > Secondary Vertical Axis Title > Horizontal Title.