The frequency distribution of marks obtained by 60 students of a class are give below. MARKS. NO OF StUdents. 10-20. 1. 20-30. 2 30-40. 3. 40-50. 10. 50-60. 7. 60-70. 10. 70-80. 20 80-90. 3 90-100. 4 CALCULATE THE AVERAGE MARK
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Step-by-step explanation:
students = 60
marks obtained by number of students :
10 - 20 marks obtained by 1 student
20 - 30 marks obtained by 2 students
30 - 40 marks obtained by 3 students
40 - 50 marks obtained by 10 students
50 - 60 marks obtained by 7 students
60 - 70 marks obtained by 10 students
70 - 80 marks obtained by 20 students
80 - 90 marks obtained by 3 students
90 - 100 marks obtained by 4 students
average = mean
marks obtained by students
total number of students
total number of students = 60
By the information which I provided to you can find your answer easily I advise you to find it yourself. by the information I provided.
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