Question

If mean is 10 and standard deviation is 2 for a Normal distribution, find quartile deviation and mean deviation.

Answer 1

For the normal distribution

Quartile deviation 

= \(\frac{2}{3}\) σ =  \(\frac{2}{3}\) x 2 

= 1.33.

Mean deviation = \(\frac{4}{5}\) 

= \(\frac{4}{5}\) x 2 = 1.6.