The following sample was obtained from a population with unknown parameters: Scores 1,5,1,1

a) Compute the sample meanand standard deviation

b) Compute the standard errorof the mean

The following sample was obtained from a population with unknown parameters. Scores 1,5,1,1

a) compute the sample mean and standard deviation

b) compute the standard error for M

A) To calculate the sample mean, you simply need to add up all the scores and divide them by the number of scores in the sample. In this example, your scores are 1, 5, 1, and 1. If you add these up and divide them by 4 (the number of scores), you’ll have your mean.

Calculating the sample standard is a …

Includes a worked example to calculate sample mean, standard deviation, and standard error of the mean.