There are 21 campers at a 3-week-long summer camp. During the camp, the counselors recorded the number of campers that could complete 5 different
obstacles on the first and final week of camp. The dot plots show the data.
Number of Campers
Completing Obstacles
Number of Campers
Completing Obstacles
:
.
:
0 1
2
3
4
5
0
1
2 3 4 5
Number of Obstacles
First Week
Number of Obstacles
Final Week
Which statement about the data is true?
M. The number of campers who completed at least 3 obstacles increased by
exactly 50% between the first week and the final week.
P. The median number of obstacles completed stays the same between the first
week and the final week
R. The mean number of obstacles completed increased between the first week
and the final week.
S. The range of obstacles completed increased by 2 between the first week and
the final week