A workbook of personnel deployed to Iraq and Afghanistan
One sheet on Iraq, one on Afghanistan and a third providing some support material for teachers
Use a small list of data to find the mean and standard deviation using the two formulae for the variance
Using the larger data lists, calculate these stats using calculators and/or excel
Construct a frequency table of the Iraq data and calculate the stats and compare with the list stats
Does summarising the data into a frequency table introduce significant changes?