defination of mean in statistics.
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The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set. Created by Sal Khan.
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Mean
The mean, or average, is calculated by adding up the scores and dividing the total by the number of scores. Consider the following number set: 3, 4, 6, 6, 8, 9, 11. The mean is calculated in the following manner:
3 + 4 + 6 + 6 + 8 + 9 + 11 = 47
47 / 7 = 6.7
The mean (average) of the number set is 6.7.
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