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Mean, median and one unusual value

Mean, median and one unusual value

Key points

1. Put values in order before finding the median.
2. The mean is the sum divided by the number of values.
3. For an even number of values, average the two middle values to find the median.
4. An unusual value can affect mean and median differently.

Worked example

Try it

Find the mean and median of 2, 4, 6, 8.

Answer: The mean is 20 ÷ 4 = 5. The median is (4 + 6) ÷ 2 = 5.

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