IXL | Mean, median, mode, and range: find the missing number

Rudy has the following data:

If the median is 2, which number could q be?

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Learn with an example

Zoe has the following data:

If the mean is 12, which number could k be?

The mean is the average of the numbers. You find the mean by adding the numbers together and then dividing by the number of numbers in the group.

There are 4 numbers in the group.

Try k = 8.

Find the sum of the numbers.

6 + 17 + 8 + 17 = 48

Divide by 4.

48 ÷ 4 = 12

When k = 8, the mean is 12.

Try k = 4.

Find the sum of the numbers.

6 + 17 + 4 + 17 = 44

Divide by 4.

44 ÷ 4 = 11

When k = 4, the mean is 11.

The mean is 12, so k = 8.

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