# Statistics

A disadvantage of using arithmetic mean to summarize a set of data is?

A. the arithmetic mean sometimes has two values.

B. it can used for interval and ratio data.

C. it is always different from the median.

D. it can be biased by one or two extremely small or large values.

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2. Think of the mean as a fulcrum (balance point) for a distribution of scores.

I hope this helps.

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3. D. It can be biased by one or two extremely small or large values.

The advantage is that it takes every number into account.

The disadvantage is that if you have a very large or very small number disproportionate to the rest then you calculations will be slightly off.

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4. A. the arithmetic mean sometimes has two values

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5. A. The arithmetic mean sometimes have two values

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