The same test is given to the three sections of Grade VI. Results are Section I, M = 24, n = 32, Section II, M = 31, n = 54, Section III, M = 35, n = 16. The general mean for the grade is (M stands for mean and n denotes the total frequency)
1.39.43
2.19.43
3.29.43
4.49.43

• Correct Answer: 3