Measures of Cen...

The average (arithmetic mean) of a set of seven numbers is $$8$$. When an eighth number is added to the set, the average of the eight numbers is still $$8$$. What number was added to the set?

Following is arranged in ascending order. If the median of the data is $$63$$, find the volume of x in a series $$29, 32, 48, 50, x, x+2, 72, 78, 84, 95$$.

The formulae for calculating the median if individual observations are given will be.

The arithmetic mean between $$\cfrac { x+a }{ x } $$ and $$\cfrac { x-a }{ x } $$ when $$x\ne 0$$, is (the symbol $$\ne$$ means "not equal to"):

Consider the following frequency distribution.

Find the value of $$p$$, if the mean of the following distribution is $$20$$.

What is the value of mean for the following data.

The following is the distribution of weekly wages of workers in a factory. Calculate the arithmetic mean of the distribution.

The median of $$0.05,0.50,0.055,0.505\ and\ 0.55$$ is

Find the mode of the given set;
$$3$$, $$5$$, $$9$$, $$6$$, $$5$$, $$9$$, $$2$$, $$9$$, $$3$$ and $$5$$