Bar Line Combination

Bar Line charts are useful for spotting trends and comparing items against one another as well as showing comparisons between metrics. For instance, you might have bars that represent the number of employees per department, and a line that indicates productivity; or bars that represent software product sales, and a line that represents the number of evaluation downloads. You cannot have more than one line per bar line chart, so if you need to compare more than one set of metrics, you will have to create multiple charts to show them.

Note: Bar Line charts require two data sources -- one for the bars, one for the line. These are set through the Primary Datasource and Secondary Datasource tabs at the top of the right half of the Bar Line properties window. In order to properly show a relationship between the two data points, you should use the same data source for both the bars and the line.
An example of a bar line chart.