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.

$22.4$22.4, $25.4$25.4, $19.1$19.1, $24.3$24.3, $7.4$7.4

$-14$−14, $0$0, $-2$−2, $-18$−18, $-8$−8, $0$0, $-15$−15, $-1$−1.