Q. 14.4( 24 Votes )

# I have written ag

Answer :

The arithmetic mean is important in statistics. It is also called average or average value, is the quantity obtained by summing two or more numbers or variables and then dividing with the number of numbers or variables.

Direct method of finding the arithmetic mean is the easiest.

We have been given frequency distribution table, let’s make it again.

By direct method, arithmetic mean (AM) is given by

⇒

⇒ AM = 17.425

**Thus, average age of his/her friends is 17.4.**

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