There are two 8year olds, two 10year olds, and four 11year olds. (They are all a year older.)
Last year the distribution looked like this.
7 7 9 9 10 10 10 10
Ten was the mode (the age that occurred most often). There were two 7yearolds and two 9yearolds. The mean age was 9 (72 divided by 8).
This year the distribution looks like this.
8 8 10 10 11 11 11 11
