Mean = sum of all values / Total no. of values = 24.0 Variance = [ (34-24)^2 + ( 42-24)^2 + ( 12-24)^2 + (10-24)^2 + (22-24)^2 ] / 5 = 153.6 Solution Mean = sum of all values / Total no. of values = 24.0 Variance = [ (34-24)^2 + ( 42-24)^2 + ( 12-24)^2 + (10-24)^2 + (22-24)^2 ] / 5 = 153.6.