Question

Question #0ebed

Answer 1

3

Explanation:

The mean of a set of numbers means its average. You can work out the mean (average) of a set of numbers by calculating its sum and dividing it by the number of terms.

`2+1+4+6+1+4+3=21`
There are 7 numbers in this set.
`21/7=3`

Answer 2

3

Explanation:

`color(blue)("Talking about averages")`

A mean is that single value that when multiplied by the original count of numbers gives the same answer as the sum of all the original numbers.

There are three types of average.

Mean - as above
Median - the value or range of values that occur the most often.
Mode - the central value once the numbers have been put in order.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
`color(blue)("Answering the question")`

Mean `->("sum of all the numbers")/("count of all the numbers") ->(2+1+4+6+1+4+3)/7`

`=21/7=3`