To do curve fitting and forecasting :
1.Enter the data into two SUM lists: one for the
2.From the SUM menu, press to display a menu of
3.Press a menu key to select a list of
4.Select a list of
5.Now you see the FRCST menu. Whichever
6.To calculate the
.
7.To forecast (estimate) a value:
a.Key in the known value and press the menu key for that variable.
b.Press the menu key for the variable whose value you want to forecast.
Example: Curve Fitting. BJ’s Dahlia Garden advertises on a local radio station. For the past six weeks, the manager has kept records of the number of minutes of advertising that were purchased, and the sales for that week.
134 10: Running Total and Statistics
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