Question

In the class intervals 10-20, 20-30, 20 is taken in
A. The interval 10-20
B. The interval 20-30
C. Both intervals 10-20, 20-30
D. None of the intervals

Answer 1

Answer:

The interval 20- 30 is taken in the class intervals 10-20, 20-30 .

Answer 2

In the class intervals 10-20, 20-30, 20 is taken in the interval 20 - 30.

Option (B) 20 - 30 is correct.

 

Extra information :  

Grouped frequency distribution are of two types :  

Exclusive form (continuous form) : A frequency  distribution in which upper limit of each class is excluded and lower limit is included,  is called an exclusive form.

E.g - In class 0 - 10 , we include 0 and exclude 10  and in class 10 - 20, we include 10 and exclude 20.  

 

Inclusive form (Discontinuous form) :  A frequency distribution in which each upper limit, as well as lower limit, are included, is called an inclusive form.

E.g - In 0 - 10, both 0 and 10  are included ; in class 11 - 20 , both 11 and 20 are included.  

 

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