Estimate the arithmetic mean of the following data
`1, 15, 2, 9, 9, 1, 1, 11, 12, 12, 10, 10, 17, 2`
Verify your answers by actual calculations.

Estimate the arithmetic mean of the following data : 5, 6, 7, 8, 8, 10 10, 10, 12, 12, 13, 19,19,19,20. Verify your answers by actual calculations.

Find the mode of the following data. 5, 6, 9, 10, 6, 12, 3, 6, 11, 10, 4, 6, 7.

Find the median of the following data: 5,7,9,11,15,17,2,23 and 19

Estimate the arithmetic mean of the following data : 17, 25, 28, 35, 40. Verify your answers by actual calculations.

Find the mode of the following data. 5 ,6, 9 ,10 , 6,12 ,3,6, 11,10 , 4 , 6 , .

Estimate the arithmetic mean of the following data 19, 26, 29, 37, 39 Verify your answers by actual calculations.

Find the mean deviation about the median for the following data: 13, 17, 16, 11, 13, 10, 16, 11, 18, 12, 17.

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

Find the mean deviation about the median for the following data: 3, 9, 5, 3, 12, 10, 18, 4, 7, 19, 21.

Find the mean from the mean of the following discrete data 6,7, 10,1213,4,12 ,16