Posted by **Tykrane** on Thursday, December 17, 2009 at 10:45am.

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.

- Statistics -
**Ms. Sue**, Thursday, December 17, 2009 at 12:00pm
If you post YOUR answer, we'll be glad to check it.

- Statistics -
**PsyDAG**, Friday, December 18, 2009 at 11:28am
Think of the mean as a fulcrum (balance point) for a distribution of scores.

I hope this helps.

- Statistics -
**Aaron**, Thursday, April 8, 2010 at 10:56pm
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.

- Statistics -
**kenny**, Tuesday, September 23, 2014 at 8:18pm
A. the arithmetic mean sometimes has two values

- Statistics -
**Sandi**, Monday, February 23, 2015 at 11:00pm
A. The arithmetic mean sometimes have two values

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