First, arrange the set of results 192, 216, 202, 195, 204 in increasing order:
192, 195, 202, 204, 216.
Note that
- 195-192=3;
- 202-195=7;
- 204-202=2;
- 216-204=12.
The range is 216-192=24.
Using Q-test
[tex]Q_{calc}=\dfrac{\text{Gap}}{\text{Range}}=\dfrac{12}{24}=0.5<0.65=Q_{table}[/tex]
you can state that number 216 is to be retained.
