9th Class
Mathematics
Statistics
Question Bank
Statistics
question_answer
In a class test, in Mathematics, 10 students scored 75 marks, 12 students scored 60 marks, 8 students scored 40 marks and 3 students scored 30 marks. The mean of their score is (approximately) ____.
A) 57 marks
B) 56 marks
C) 15 marks
D) 54 marks
Correct Answer:
A
Solution :
Total scored of all students Total number of students = 10 +12 + 8 + 3 = 33 Mean score (approx.)