Simulation: Errors when estimating a mean
Use this page to introduce the idea that estimation of an unknown parameter involves an error and this error has a distribution.
In practice, the population distribution is unknown, so we only have a single estimate of the population mean — the sample mean.
In practice, we cannot determine the error in this estimate.
Since this is a simulation, we can cheat! Click Peak at population to display the actual population distribution, population mean and sampling error.
Click Another sample several times to build up the sampling distribution of the estimation error.
The data sets are annual rainfalls in some region.