After scoring a test that was administered to a group of students, teacher finds an error in the scoring key and decides to add two points to each student's score. Which of the following measures are affected by the change in scores of students?
1) The range
2) The mean
3) The mode
4) The quartile deviation
5) The standard deviation
1
2 and 3 only
2
4 and 5 only
3
2, 3 and 5
4
1, 4 and 5