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September 23, 2014

September 23, 2014

Posted by **Math help** on Monday, February 25, 2008 at 8:26am.

- Statistics -
**drwls**, Monday, February 25, 2008 at 10:03am1. 68 is 2 sigma from the mean. 95% are within that distance of the mean, and 5% are outside it. Half of those (2.5%) are below it on the low side (below 68).

2. 50%. The mean always divides the distribution in that ratio: half above and half below.

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