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Topic: Data Literacy D1.5 – Finding the Median

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Ontario Curriculum Expectation:

4.D1.5 determine the mean and the median and identify the mode(s), if any, for various data sets involving whole numbers, and explain what each of these measures indicates about the data.


Median

The median is the middle number in a set of numbers organized from lowest to highest.

Find the median by sorting the values in order from lowest to highest. The median is the middle value in the set.

If there are two values in the middle, find the mean of the two middle numbers.

Example:

1,  6,  4,  8,  2,  7

Step 1 – Organize from lowest to highest: 1,  2,  4,  6,  8,  7

Step 2 – Find the mean of the middle numbers: (6 + 4) ÷ 2 = 5

The median is 5.