Mean = Sum of the observations/ Number of observation = 2 + 5 + 3 + 5 + 6 + 1 + 2 + 4 + 3 + 5 + 2 + 2/12 = 40/12 = 3.3 Mean percentage of salary donated = 3.3 % Arranging the data in ascending order, we get 1, 2, 2, 2, 2, 3, 3, 4, 5, 5, 5, 6 The maximum occurring observation = 2 ∴ Modal percentage of salary donated = 2% Median = (n/2)th observation + (n/2 + 1)th observation/2 = 6th observation + 7th observation/2 = (3 + 3)/2 = 3 ∴ Median percentage of salary donated = 3% Social service, kind, caring.