Question

4. A recent study observed the number of bike riders ages 0 to 20 that wear helmets.

The results are represented in the table.
0-5 years
6-10 years
11-15 years
15-20 years
wear helmet did not wear helmet
21
34
14
3
14
18
12
2.
Make an observation based on a data value that is not in the table. Explain your
reasoning.

Answer 1

An observation based on a data value that is not in the table is the last Age Class should have been 16- 20 years and not 15- 20 years since 15-year olds had been included in the 3rd class.

We can dictate this observation in the table because the other Age Classes were well-ordered, unlike the last Age Class.

Ages wear helmet did not wear helmet

0-5 years 21 14

6-10 years 34 18

11-15 years 14 12

15-20 years 3 2

Thus, we can conclude that the table should have ensured consistent in the Age Class.