... yDATA SET MEDIAN1 6 1, 1, 5, 6, 6, 7 5. 52 5 1, 2, 5, 5, 6, 7 5 3 4 1, 3, 4, 5, 6, 7 4 .5 4 3 1, 3, 4, 5, 6, 7 4 .5 5 2 1, 2, 5, 5, 6, 7 5 6 1 1, 1, 5, 6, 6, 7 5. 5Regardless of the values of ... 7, t could be 5. According to 1, s=0.Combining 1 and 2, s=t=0Answer is C21. First, we arrange the 10 ,5, -2 ,-1 , -5 and 15 at sequence: -5 , -2 , -1 , 5, 10, 15. So, the median is (-1 +5) /2=222.Median: ... 102 + 92 + 82 + 72 + 62 + 5 2 + 42 + 32 + 22 + 12 + 02 + (-1 )2 + (-2 )2 (-3 )2 + (-4 )2 + ( -5 ) 2 + (-6 )2 (-7 )2 + (-8 )2 + (-9 )2 + (-1 0)2 = 770. Average of the...