Prove that : `|(13,16,19),(14,17,20),(15,18,21)|=0`

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

Prove that:: det [[13,16,1914,17,2015,18,21]] = 0

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

Find the mean deviation about the median for the data :13,17,16,14,11,13,10,16,11,18,12,17

The mean deviation from mean for the data : 13,15,16,15,18,15,14,18,17,10 is

Mode of the data 15,17,19,14,18,15,14,20,19,14,15,19,14 is

Find the mode of the data 15,14,19,20,14,15,16,14,15,18,14,19.

A class has 15 students whose ages are 14,17,15,14,21,17,19,20,16,18,20,17,16,19 and 20 yr. One students is selected in such a manner that each has the same chance of being of chosen and the age X of the selected stuydent is recorded. Mean variance and standard deiation (SD) of X,are respectvely

Find the mean deviation about 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