The sample variance is so that the sample standard deviation is sn = √0.76 = XXXXXXXXXXThe median is 4.2, so that the absolute deviations from the median are given by 0.4      1.2     XXXXXXXXXX. The...

The sample variance is

so that the sample standard deviation is sn = √0.76 = 0.872. The median is 4.2, so that the absolute deviations from the median are given by

0.4      1.2     1.0 0.0 0.8.

The MAD is the median of these numbers, which is 0.8.