Find the mean, median, mode, and range of the following values: 6, 12, 13, 17, 3, 7, 12. a. Mean = 10 Median = 13 Mode = 12 Range = 18 c. Mean = 10 Median = 13 Mode = 13 Range = 18 b. Mean = 8.6 Median = 12 Mode = 13 Range = 14 d. Mean = 10 Median = 12 Mode = 12 Range = 14 "