Question 1189027

0+900+1200+900=3000 cups divided by 2500 people=1.2 cups for the mean,
Variance is sum of squared deviations from the mean
1.44*700+0.04*900+0.64*600+3.24*300=2400
divide by 2500, and variance is 0.96 cups^2, calling this a population, although it is also the same for a sample.
Calculator: L1 IS 0,1,2,3; L2 is 700,900,600,300
Then 1-variable stats L1,L2 enter