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 spreadsheet ...

A trendline in Excel is a line that shows a general trend (upwards/downwards or increase/decline). Thus, it can help in a quick interpretation of the data. The trendline in Excel can be added to a ...

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...