The mean is:
always one of the scores
a measure of how spread out the scores are
a measure of centre of the scores
When finding the mean, is it necessary to arrange the data items in order?
Find the mean of the following scores:
$8$8, $15$15, $6$6, $27$27, $3$3.
Find the mean of the following scores.
$56$56, $89$89, $95$95, $71$71, $75$75, $84$84, $65$65, $83$83.