Sample #3
Data Set:
Ages of Students on the
Swim Team
7, 7, 8, 8, 8, 9, 9, 9, 9, 9,
10, 10, 10, 11, 11, 12, 12,
13, 13, 14
Statement:
“If years could be added up
and divided equally among
people, everybody on this
swim team would be 9.95
years old.”
BCR: What measure of central tendency did the author of the statement use to make his claim? Use words
and numbers in your explanation.
I know that the author of this statement used the mean to make his claim.
The mean of the numbers is 9.95.
7+7+8+8+8+9+9+9+9+9+10+10+10+11+11+12+12+13+13+14 = 199
199÷20 = 9.95
J. Palmisano 2008