Find `Q_(1)` for 8 , 12 , 7 , 5 , 16 , 10 ,21 and 19 .

Find Q_(3) for 7 , 16 , 19 , 10 and 21 and 12 .

Find Q_(1) of the observations 21 , 12 , 9 , 6 , 18 , 16 and 5 .

Find the mean of the quartiles Q_(1) , Q_(2) and Q_(3) of the data 5 , 9 , 8 , 12 , 7 , 13 , 10 , 14.

Find the mode of 8, 12, 1, 8, 5, 10, 9, 21, 1, 7, 8.

Find Q_(1) for the observations 13, 8, 11, 15, 19, 4 and 10.

Find the median of the data 5, 8 , 4, 12 , 16 and 10 .

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

Find the mode of 10, 12, 11, 10, 15,20, 19, 21, 11, 9, 10.

Find the median of : 16, 9, 11, 23, 7, 5, 12, 14, 8, 10, 21