Marks secured by 42 students in Economics
are:
Marks
15
20
22
23
27
35
18
No. of students
8
4
7
3
8
7
5
Find average marks.
Answers
Answered by
19
Answer: 23.2 approximately
Explanation:
Average Marks = Total Marks / Total Students
=> Average Marks = ( 15×8 + 20×4 + 22×7 + 23×3 + 27×8 + 35×7 + 18×5 ) / ( 8 + 4 + 7 + 3 + 8 + 7 + 5 )
=> Average Marks = ( 120 + 80 + 154 + 69 + 216 + 245 + 90 ) / ( 42 )
=> Average Marks = 974/42 = 23.19 ~ 23.2
Answered by
1
Answer:
Answer: 23.2 approximately
Explanation:
Average Marks = Total Marks / Total Students
=> Average Marks = ( 15×8 + 20×4 + 22×7 + 23×3 + 27×8 + 35×7 + 18×5 ) / ( 8 + 4 + 7 + 3 + 8 + 7 + 5 )
=> Average Marks = ( 120 + 80 + 154 + 69 + 216 + 245 + 90 ) / ( 42 )
=> Average Marks = 974/42 = 23.19 ~ 23.2
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