Dima asked her seventh-period class how many times they attended a summer camp since first grade. She put her data in the table and used the shaded rows to find three sample means.

Summer Camp Attendance
3
1
0
4
1
4
2
3
0
5
0
1
1
2
0
4
1
4
4
2
3
2
0
1
4

What is the range of the values for the sample means?
1
1.2
1.8
2