Descriptive Sta...

The actual temperature differs the most from the forecast temperature on:

How far is the place of the merchant from the town?

When did the person stop on his way?

Fastest ride is from interval :

The quartile deviation of the income of a certain person given in rupees for 12 months in a year:139, 150, 151,151,157,158,160,161,162,162,173,175

Standard deviation for first 10  natural numbers is

The quartile deviation of daily wages (in Rs.) of 7 persons given below:
$$12,7,15,10,17,17,25$$ is

Let $${ x }_{ 1 },{ x }_{ 2 },.....{ x }_{ n }$$ be $$n$$ observations with mean $$m$$ and standard deviation $$s$$. Then the standard deviation of the observations $$a{ x }_{ 1 },a{ x }_{ 2 },.....a{ x }_{ n }$$, is

Standard deviation for first 10 even natural numbers is

Consider the frequency distribution