*6. Comment on the probable shape for each of the following distributions (knowing nothing else about these distributions):
(a) ar{x} = 52, Mdn = 55, mode = 60
(b) ar{x} = 79, Mdn = 78, mode = 78
(c) ar{x} = 50, Mdn = 50, mode = 60, 40
(d) ar{x} = 28, Mdn = 26, mode = 20