WEBVTT

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Here is the problem: Data: 10, 17, 1, 20, 3, 19, 2, 30, 7.

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Measures of central tendency for a list of numbers.

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Sort the data from smallest to largest.

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Mean: add the values and divide by how many there are.

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Median: the middle value of the sorted list. With 9 values (odd), the median is value number 5.

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Mode: the value(s) that appear most often. Every value appears exactly once, so there is no mode.

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Range: largest minus smallest.

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So the answer is Mean equals 12.11111111; Median equals 10; Mode equals no mode; Range equals 29.

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The mean balances all values, the median splits the sorted data in half and is less affected by outliers, and the mode is the most common value.

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Sum 109 equals mean times n equals 12.11111111 times 9 equals 109.