From the table given below calculate the mean mark:
Marks: 10, 20, 30,40, 50, 60
No. of students: 6, 3 ,6, 7, 4, 4
Answers
Answered by
1
Answer:
34
Step-by-step explanation:
Total students = 6+3+6+7+4+4 = 30
Total marks
= 10×6 + 20×3 + 30×6 + 40×7 + 50×4 + 60×4
= 60 + 60 + 180 + 280 + 200 + 240
= 1020
Mean marks = 1020/30 = 102/3 = 34
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