Question

Q. 18

Calculate mean deviation about the mean for the following
observations: 1, 2, 3​

Answer 1

Step-by-step explanation:

Mean of the following numbers = (1+2+3)/3 = 2

deviation from the values = 2-1=1

2-2=0

3-2=1

Mean deviation about mean = (1+0+1)/3 = 2/3