Find the mean deviation about the mean for the data.
x i | 5 | 10 | 15 | 20 | 25 |
f i | 7 | 4 | 6 | 3 | 5 |
can anyone plz explain me dis as early as possible how 2 find d value of x?
x i f i 35 + 40 + 90 + 60 + 125 = 350
mean = ( sum of x i f i) / no. of observation
mean is 350 / 5 = 70
I x i - mean I = 35 , 30 , 20 , 10 , 55
f i I x i - mean I = 245 + 120 + 120 + 300 + 275 = 1060
mean deviation = (sum of f i I x i - mean I ) / n
1060 / 5 = 2 12