Find Mean, Median, Mode, Range given a data set.

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Presentation transcript:

Find Mean, Median, Mode, Range given a data set.

The mean is the sum (add) of the values in the set divided by the number of values in the set.

The median the middle value when the values are ordered from small to big. *If there are 2 middle pieces add them together and divide by two. (Find the mean).

The mode is the value or values that occur most often. *You could have one mode, many, or none.

The range of a set of data is the difference (subtract) between the biggest and smallest numbers in the set.

Example #1 2, 4, 10, 7, 5 5.6 Mean: Median: Mode: Range: 5 None 8

15.17 15.5 12 & 18 6 12, 18, 14, 17, 12, 18 Example #2 Mean: Median: Mode: Range: 15.5 12 & 18 6

Example #3 161, 156, 150, 156, 150, 163 156 Mean: Median: Mode: Range: 156 150 & 156 13

A value that is very different from other values in the set is called an outlier.

45 Rico scored 74, 73, 80, 45, 67, and 75 on six history tests. Example #4 Rico scored 74, 73, 80, 45, 67, and 75 on six history tests. Which of these scores is an outlier? 45

Mean, Median, Mode & Range - PRACTICE