Marks.                                  

More than 0

More than 10

More than 20

More than 30

More than 40

More than 50

No.of students 

50

46

40

20

10

3

Find mean by direct method 

 

Asked by Rajulsampat5 | 23rd Feb, 2020, 05:05: PM

Expert Answer:

Marks.                          No. of students        

More than 0                   50

More than 10                  46

More than 20                 40 

More than 30                  20

More than 40                 10

More than 50                 3

The above table can be written as

begin mathsize 16px style straight x with bar on top equals fraction numerator begin display style stack sum straight f with straight i below end style straight x over denominator sum straight f end fraction equals 1440 over 50 equals 28.8 end style

Answered by Sneha shidid | 24th Feb, 2020, 10:07: AM

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