prove that `|[13,16,19],[14,17,20],[15,18,21]| = 0`

Evaluate |{:(13,16,19),(14,17,20),(15,18,21):}| .

Find the median of the data: 17,16,12,14,14,16,17,22,15,17,16,18

Mode of the data :15,14,19,20,14,15,16,14,15,18,19,15,17,15 is (i) 14 (ii) 15 (iii) 16 (iv) 17

Find the mode and median of the data: 13, 16, 12, 14, 19, 12, 14, 13, 14

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

The mode of given data 15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15, 17 and 15 is

Find the values of the following determinants |{:(13,15,17),(14,16,18),(15,17,19):}|

Find the mode of the following data: 25,16,19,48,19,20,34,15,19,20,21,24,19,16,22,16,18,20,16,19

For the data 14, 7, 13, 12, 13, 17, 8, 10, 6, 15, 18, 21, 20, compute P_(80)

A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability distribution of the random variable X? Find mean, variance and standard deviation of X.