# How do you compute the sample mean and estimated standard error for the sample?

The following sample was obtained from a population with unknown parameters. Scores: 6, 12, 0, 3, 4

a. Compute the sample mean and standard deviation. (Note that these are descriptive values that summarize the sample data.)

b. Compute the estimated standard error for M. (Note that this is an inferential value that describes how accurately the sample mean represents the unknown population mean.)

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#### Solution Preview

In order to determine the mean, you simply sum all the scores within the data set and divide by the number of scores.

Mean = (6 + 12 + 0 + 3 + 4)/5

= 5

Standard deviation is a little tricky to explain, but I think this source will help walk you through it if you ...

#### Solution Summary

This solution contains complete, worked through solutions for descriptive and inferential statistics from sample data. The sample mean, standard deviation and estimated standard error are calculated.