create data point line in a column chart

[Annie]

I would like to know how to create a data point line as a
point of reference for a column chart so that the data
for the previous year could be displayed as a line amidst
the columns. Thank you for your help.

 

[Debra Dalgleish]

Add the previous year's data to the column chart
Right click on the previous year column
Choose Chart Type
Select a line chart, click OK