If you understand the definition of a mathematical function, a good way to judge it is that any line drawn ... calculate Consumer Price Index or CPI in Excel and create its graph.

To calculate the Consumer Price Index between two years in Excel ... and hit the Percentage symbol. The best graph type for CPI values is the bar graph. To create it, select the CPI percentages.

a line can be drawn on the SML graph to show a theoretical risk-adjusted price equilibrium. Any point on the line itself shows the appropriate price, sometimes called the fair price. It is rare ...

The most useful selection is a bar chart, because it allows you to format the second series as a line. Superimposing two types of charts makes identifying the two data scales easier. How to Format ...