The SAT scores for a group of 10 students are shown. What is the mean absolute deviation of the group? A. 45B. 88C. 880D. 1532

first we have to find the mean (average) of these numbers
(1520 + 1630 + 1480 + 1580 + 1400 + 1300 + 1700 + 1610 + 1580 + 1520) / 10 = 15320 / 10 = 1532

now we find the absolute value of the difference between each data value and the mean.
|1520 - 1532| = 12
| 1630 - 1532| = 98
|1480 - 1532| = 52
|1580 - 1532| = 48
|1400 - 1532| = 132
|1300 - 1532| = 232
|1700 - 1532| = 168
|1610 - 1532| = 78
|1580 - 1532| = 48
|1520 - 1532| = 12

now, we find the mean (average) of these numbers....and that is ur MAD
(12 + 98 + 52 + 48 + 132 + 232 + 168 + 78 + 48 + 12) / 10 = 880/10 =
88 <== ur mean absolute deviation