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Compute and Interpret the Mean
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ParaPro
PPM.128 Compute and Interpret the Mean
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A student says the mean of 4, 8, 12, and 20 is 12 because (4 + 20) ÷ 2 = 12. What is the student's error?
A
The student forgot that the mean is always the middle listed number, using the displayed information.
B
The student used only the least and greatest values instead of all four values.
C
The student should have used the most common value.
D
The student divided by too many values.
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