Calculate the mean, median, mode, range and standard deviation of the data: -108, -50, -50, 28, 88 mean = -2.8, median = -50, mode = -50, range = 196, standard deviation = 76.5 mean = -18.4, median = 28, mode = -108, range=197, standard deviation = 76.6 mean = -18.4, median = -50, mode = -50, range = 196, standard deviation = 76.6 mean = -2.8, median = -108, mode = -50, range = 195, standard deviation = 76.5 a) b) d) None of the above