Find the median, Mathematics

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Marks obtained by 70 students are given below:

Marks

20

70

50

60

75

90

40

No. of

Students

 

8

 

12

 

18

 

6

 

9

 

5

 

12

Marks

No . of

students

c.f

20

8

8

40

12

20

50

18

38

60

6

44

 

 

Find the median.                                                                                 (Ans:50)

Ans:

70

12

53

75

9

58

90

5

70

N = 70

N/2 = 70/2 = 35

The corresponding value of marks for 35 is 50


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