Find the M.D.(about mean) of the following observations: 2,3,5,6,9,10,12,17,20,26.

Find the median of the following data: 12,11,6,7,10,17,9,15,13

Find the mean deviation from the mean for the following data : 6,7,10,12,13,4,8,12.

Find the mean for the following data: 13,17,16,14,11,13,10,16,18,12,17

Find the mean and variance for the following data : 2, 4,5, 6, 8, 17.

Find the mean deviation from the median for the following data : 9, 12, 18, 3, 5, 3, 10, 12, 21, 12, 21.

Evaluate the following determinants: |(2,3,7),(13,17,5),(15,20,12)|

Find the variance of the following data : 6, 8, 10, 12, 14, 16, 18, 20, 22, 24.

Find the mean deviation from the mean for the following data : 12,3,18,17,4,9,17, 19, 20, 15, 8, 17, 2, 3, 16, 11,3,1,0,5 .

Find the mode of the following marks obtained by 20 students 3,5,6,9,3,2,8,8,6,4,5,10,3,5,7,9,9