Dorsett Educational Systems – Statistics Tape 2 covers graphs for data in frequency tables. Frequency histograms, frequency polygons, cumulative frequency histograms and cumulative frequency polygons are reviewed. In my modern use of statistics for process improvements we typically use histograms with a normal distribution superimposed on top. This tape two run time was about 11 minutes a bit shorter than tape one. Histograms will likely be coded into my version of statistics program. Shown below are a set of screen shots from the lesson. It is interesting to note that it is all done in text mode.
Next up :
Starting the statistics program in Kyan Pascal, and Tape 3 – Measures of central tendency.