A cumulative average recalculates a data set's average as new data is added. During the recalculation all data contained in the data set is included in the average. In Microsoft Excel your ...

By default, though, Excel's graphs don't include label information such as the exact numbers used to create the graph or the percentages that are represented. This doesn't mean you have to go ...

By doing this, the curves in the graph would change as and when you change the value of the data. Read: How to calculate Consumer Price Index or CPI in Excel and create its graph.