Brainstorming Average

How about Mean, Median, and Mode for grouped data?

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Mean

Add all the number, and divide it by the frequency

75 + 80 + 80 + 90 +95 = 420

420 / 5 = 84

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Median (middle data)

Write it from the smallest to largest

75,80,80,90,95

The middle data is 80!

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Mode (data that occurs most often)

75,80,80,90,95

80 occurs 2 times