Can we recall varoius methods to find out mean?

Recall direct method of finding mean.

Think about the direct mean formula.

Let us list the first 10 even numbers.

Do we know its upper limit and lower limit? 2)Can we sum up their upper and lower limit?

Average is a central value.

Can we use direct method to find out the mean

Try to find the mean by direct method and put the given values into it.

Work out two linear equations.

Think of formula of mean.