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Topic starter
If so how?
Cheers
Posted : 08/03/2011 3:34 pm
In any normally distributed population, 95% of the results will be within 2 standard deviations either side of the norm - known as a 95% confidence interval.
One standard deviation either side of the norm will cover 68%.
Have a look under the heading 'Rules For Normally Distributed Data' [url= http://en.wikipedia.org/wiki/Standard_deviation ]here[/url]
Posted : 08/03/2011 3:57 pm
Topic starter
How can you prove it is normally distributed data though?
Posted : 08/03/2011 4:35 pm
Kolmogorov-Smirnov or Shapiro-Wilk will test a sample for normality.
Posted : 08/03/2011 4:43 pm