Finding Estimated Means from Grouped Frequency Tables

The spreadsheet view shows data for a grouped frequency table. Change values as you wish. A maximum of 16 values will be included in each group. -99 is a piece of data not included in the diagram. DO NOT DELETE VALUES but instead replace them with -99 if you wish. Use the sliders in the graphics view to reveal progressive elements of the midpoints column and the individual values. Also FreqXmid slider shows progressive elements of the frequency x midpoint column. The check box is used to show and hide the mean calculation.