Use the information below for questions 24 and 25. Observation Data (X-X) 1 XXX 12.96 2 XXX 0.36 3 XXX 6.76 4 XXX 1.96 5 XXX 40.96 6 XXX 0.16 7 XXX 1.96 8 XXX 21.16 9 XXX 11.56 10 XXX 2.56 = 100.4 136 10 n= 24. The mean of the sample data is a. 136 b. 13.6 C. 10.04 d. 10