Chapter18Statistical Graphs andCalculationsThis chapter describes how to input statistical data into lists, howto calculate the mean, maximum and other statistical values, howto perform various statistical tests, how to determine the confi-dence interval, and how to produce a distribution of statisticaldata. It also tells you how to perform regression calculations.18-1 Before Performing Statistical Calculations18-2 Paired-Variable Statistical Calculation Examples18-3 Calculating and Graphing Single-Variable StatisticalData18-4 Calculating and Graphing Paired-Variable StatisticalData18-5 Performing Statistical Calculations18-6 Tests18-7 Confidence Interval18-8 DistributionImportant!• This chapter contains a number of graph screen shots. In each case, newdata values were input in order to highlight the particular characteristics ofthe graph being drawn. Note that when you try to draw a similar graph, theunit uses data values that you have input using the List function. Because ofthis, the graphs that appears on the screen when you perform a graphingoperation will probably differ somewhat from those shown in this manual.