Statistics Test...

Which of the following Statement is false?

What are the objectives of measure of dispersion?

Find the mean of the first five prime numbers.

Which of the following are measures of dispersion?

Which of the following are measures of central tendency.

An Um contains $$4$$ white and $$3$$ red balls. $$X$$ is the no. of red balls. Find the Mean and Variance of $$X$$.

The largest value in the collection of data is $$7.44$$. If the range is $$2.26$$, then find the smallest value in the collection

The mean deviation about median for the following data  is 4.4.calculate value of $$x$$
$$2,3,x,10,17$$.

Find the mean deviation about the mean as well as the coefficient of Mean Deviation about mean of the following set data:$$ 4, 7, 14, 11, 9$$.

If mean deviation about Mean of a particular data consisting $$10$$ observations is$$7$$, then what will be value of mean deviation when each is multiplied by $$5$$?