Interactive webpage > Understanding variation in your data > Calculating the variance (SS corrected for number of observations) > paragraph 6
You need to introduce the caterpillars and crop growth data sets; this is first time they have encountered them. They will need to know the different variable names.
Interactive webpage > Understanding variation in your data > Calculating the variance (SS corrected for number of observations) > code box 1
Give them some code and ask them to edit it. They should be able to do this once they know the variable names what they are.
e.g # Overall variance for each column (tanin, growth) for caterpillers # data set
Interactive webpage > Understanding variation in your data > Calculating the variance (SS corrected for number of observations) > paragraph 6
Interactive webpage > Understanding variation in your data > Calculating the variance (SS corrected for number of observations) > code box 1
tanin
growth
Overall variance for crop yield
Variance for each soil type