What is the mean deviation of the data 2, 9, 9, 3, 6, 9, 4 ?

The mean deviation of the data 2, 9, 9, 3, 6, 9, 4 from the mean is :

The mean deviation of the data 2, 9, 9, 3, 6, 9, 4 from the mean is

The mean deviation of the data 2, 9, 9, 3, 6, 9, 4 from the mean is : A. (42)/(7) B. (18)/(7) C. 2.5 D. (50)/(7)

What is the median of the data 3,5,9,4,6,11,18 ?

What is the mean ofthe given data? 2, 3, 4, 5, 6, 7, 8, 9

The standard deviation of the data 6, 7, 8, 9, 10 is

The standard deviation of the data 6, 5, 9, 13, 12, 8, 10 is :

What is the mode of the given data? 4, 3, 7, 13, 16, 23, 3, 4, 7, 4, 3, 3, 9, 6, 9, 6

What is the mean deviation about the mean for the data 4, 7, 8, 9, 10, 12, 13, 17?