WEBVTT

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Here is the problem: Data: 4, 6, 18, 30, 19, 19, 3.

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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 7 values (odd), the median is value number 4.

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Mode: the value(s) that appear most often. Most frequent: 19.

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Range: largest minus smallest.

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So the answer is Mean equals 14.14285714; Median equals 18; Mode equals 19; Range equals 27.

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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 99 equals mean times n equals 14.14285714 times 7 equals 99.