#### Answer

See below.

#### Work Step by Step

Not always, e.g. if the data set is $1$ and $3$, then their mean is $2$, which is not in the data set.

Published by
Wiley

ISBN 10:
1118539710

ISBN 13:
978-1-11853-971-2

See below.

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.