Measures of Dis...

If the sum of n observations is $$630$$ and their mean is $$21$$, then the value of n is ____.

The $$8th$$ decile of the following observations is
$$29, 18, 15, 30, 42, 35, 34, 28, 45, 34$$

Which of the following relation is true between $$3^{rd}$$ decile and $$30^{th}$$ percentile?

The combined mean of the following data is 

Geometric mean is a good measure of central value if the date are _______.

The mean of seven observations is $$18$$. A new observation $$16$$ is added. The mean of eight observations is _____.

Harmonic mean is better than other means if the data are for _________.

Can a quartile, a decile and a percentile be the median?

The correct relationship between A.M., G.M. and H.M is _______.

In a discrete series having $$(2n+1)$$ observations, median is ______.