15. Find the mean marks per student, using assumed-mean method:
Marks
0-10
10-20
20-30
30-40
40-50
Number of
students
12.
18
27
20
17
6
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15. Find the mean marks per student, using assumed-mean method:
Marks
0-10
10-20
20-30
30-40
40-50
Number of
students
12.
18
27
20
17
6
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Answer:
sorry this question is wrong
Step-by-step explanation:
Marks table has 5 ranges
and
No. of students has 6 range