When you sample from a population you don't get the mean every time, rather you get a point somewhere around the mean. If the population follows a normal distribution, 68% of the time the point should be within one standard devaiation of the mean and 95% of the time the point should be within two standard deviations.


The following information is required.

Mean:  
Standard deviation:  
Sample Size:  


The following parameters are optional, but can be used to customize the appearance. It is okay to leave everything below the line alone, or you can play with the parameters to see what they do.

Density Line Type:
Density Line Color:


To gain a better understanding of how to write new demonstrations for this web site, you can view the source of this page. Then you can view the source of the PointEstimation.R script that is run as a callback.

Page developed by Russell Almond.