8.2 Standard error of the mean

This term I returned to the samples of five marbles to illustrate the spread of the data versus the spread of sample means.


I used the above rig to mass the marbles and do the data entry. No preloading of names this term.

Leniva weighing a marble.

Although the number of samples was small at just six, the result illustrated the concepts underneath the standard error of the mean.

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