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Notes Unit 8: Mean, Median, Standard Deviation

I. Mean and MedianThe MEANis the numerical average of the data Unit 8: Mean, Median, Standard DeviationThe mean is found by adding all the values in the set, then dividing the sum by the number of MEDIANis the number that is in the middle of a set of data1. Arrange the numbers in the set in order from least to Then find the number that is in the 1: These are Abby s science test scores. Find the mean and find Abby s MEAN science test score?9784738810063979586+783783 9 The mean is 879784738810063979586 The median is the numbers arelessthan the the numbers aregreaterthan the likeMEDIUM Think middlewhen you hear do we findthe MEDIAN when two numbersare in the middle?1. Add the two Then divide by + 95 = 183183 2 The median 2: Find the median. II. Standard DeviationA.

1) Find the meanof the data. 2) Subtract the mean from each value. 3) Square each deviation of the mean. 4) Find the sum of the squares. 5) Divide …

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