Measures of Cen...

The numbers are arranged in the descending order : $$108,\,94,\,88,\,82,\,x+7,\,x-7,\,60,\,58,\,42,\,39$$. If the median is $$73$$, the value of $$x$$ is:

Numbers $$50, 42, 35, 2x + 10, 2x - 8, 12, 11, 8$$ are written in descending order and their median is $$25$$ find $$x$$?

If the mean of x and $$\displaystyle \frac{1}{x}$$ is M, then the mean of x$$^3$$ and $$\displaystyle \frac{1}{x^3}$$ is

Calculate the median for the following

The mean of the following frequency distribution is

Calculate the mode
$$17, 13, 16, 17, 16, 21, 21, 9, 12, 17$$

The mean of the following distribution is

The mean of $$20$$ observations is $$15$$. One observation $$20$$ is deleted and two more observations are included to the data. If the mean of new set of observations is $$15$$, then find the sum of the two new observations included.

The weighted arithmetic mean ofthe first $$n$$ natural numbers whose weights are equal to the corresponding numbers is given by,