If you look at the table, the first empty columns says “Fat Difference: Fat Minus Mean”. This means that we must find the mean for the Total Fat variable, then subtract that number from each of the sc...If you look at the table, the first empty columns says “Fat Difference: Fat Minus Mean”. This means that we must find the mean for the Total Fat variable, then subtract that number from each of the scores for fat. What you should see when you look at the table is that the sum of the differences from the mean are really close to zero, which means that we probably the calculations correctly.