Mean Median Mode and Range

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Presentation transcript:

Mean Median Mode and Range

Mean Recap MEAN = ???

Mean Recap MEAN = TOTAL NUMBER (of items)

The median is the middle value.

The median is the middle value. To work out the median of: 6 3 7 11 9 11 6 13 6 Put the numbers in order: 3 6 6 6 7 9 11 11 13

The median is the middle value. To work out the median of: 6 3 7 11 9 11 6 13 6 Put the numbers in order: 3 6 6 6 7 9 11 11 13 The number in the middle of the list is the median. So the median value is 7.

The median is the middle value. If there are two middle values, the median is halfway between them. Work out the median for this set of numbers: 3 6 6 6 7 8 9 11 11 13 There are two middle values, 7 and 8. The median is halfway between 7 and 8, so the median is 7.5.

Worksheets

The mode is the value that appears the most.

The mode is the value that appears the most. To work out the mode of: 6 3 7 11 9 11 6 13 6

The mode is the value that appears the most. To work out the mode of: 6 3 7 11 9 11 6 13 6 Put the numbers in order: 3 6 6 6 7 9 11 11 13

The mode is the value that appears the most. To work out the mode of: 6 3 7 11 9 11 6 13 6 Put the numbers in order: 3 6 6 6 7 9 11 11 13 Look for the number that appears the most. 6 appears more than any other number. So the mode value is 6.

Range The range is the difference between the biggest and the smallest number.

To work out the range of: The range is the difference between the biggest and the smallest number. To work out the range of: 6 3 7 11 9 11 6 13 6

Range The range is the difference between the biggest and the smallest number. To work out the range of: 6 3 7 11 9 11 6 13 6 Put the numbers in order: 3 6 6 6 7 9 11 11 13

Range The range is the difference between the biggest and the smallest number. To work out the range of: 6 3 7 11 9 11 6 13 6 Put the numbers in order: 3 6 6 6 7 9 11 11 13 Subtract the smallest number from the biggest number: 13 - 3 = 10 So the range of this set of numbers is 10.

Worksheets

Any Questions???