Question

The following is the distribution of weights (in kg) of 52 persons:
Weight in kg
Persons
30-40
10
40 - 50
15
50-60
17
60-70
6
70-80
4
(i) What is the lower limit of class 50-60?
(i) Find the class marks of the classes 40-50, 50-60.
(iii) What is the class size?​

Answer 1

Answer:

We know that,

Class mark=

2

lower limit + upper limit

Class mark of 40−50 is

Lower limit =40

Upper limit =50

Class mark =

2

40+50

=45

Class mark of 50−60 is

Lower limit =50

Upper limit =60

Class mark =

2

50+60

=55

Step-by-step explanation:

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