Question

The distribution below gives the weight of 30 students of a class. Find the modal weight pod the students

weight(in Kg) no.of students
40-45 2
45-50 3
50-55 8
55-60 6
60-65 6
65-70 3
70-75 2






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Answer 1

Answer:

Step-by-step explanation:

Answer

Weight ( in kg ) Frequency  Cumulative frequency  

40−45 2  2  

45−50 3  5  

50−55 8  13  

55−60 6  19  

60−65 6  25  

65−70 3  28  

70−75 2  30  

 N=30    

We have N=30 and  

2

N

​  

=15.

Median class =55−60, so l=55,f=6,cf=13 and h=60−55=5

Median=l+  

f

2

N

​  

−cf

​  

×h

⇒  Median=55+  

6

15−13

​  

×5

⇒  Median=55+1.67=56.67kg