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Published bySheryl Freeman Modified over 5 years ago
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Making Sense of Measures of Center Investigation 2
Measures of Central Tendencies Mean – add up data values and divide by total number in set Median – middle number of an ordered set of data Mode – data value that occurs most often Describe Variability in a Distribution Range Outlier Clusters Gaps
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2.1 The Mean as an Equal Share
5.25 4.75 6.50 + 6.10 22.60 22.60 4 = $ 5.65 Mean is often called the average of the data. You can also think of the mean as the amount each person gets if everyone gets an equal share.
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2.2 The Mean as a Balance Point in a Distribution
13 = 13 Both sides add up to 13 places from the mean because it is the balance point. 3 6 2 4 1
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2.3 Repeated Values in a Distribution
Mode – The data value that occurs most frequency in a set of data. Median – The midpoint in an ordered distribution. Mode Median
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2.4 Measures of Center and Shapes of Distribution
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