Question

The marks scored in an exam by a group of students is as follows:

Marks

0-20

20-40

40-60

60-80

80-100

No. of students

8

10

13

6

3

a) Estimate the mean marks scored by a student. 

(i)54                          
(ii)63                             
(iii)43                      
(iv)50 

b) What will be the upper limit of the modal class ? 

(i)20                                  
(ii)40                            
(iii)60                                   (iv)80 

c) The construction of cummulative frequency table is useful in determining the 

(i)Mean                   
(ii)Median                     
(iii)Mode                        
(iv)All of them 

d) The sum of lower limits of median class and modal class is

 (i)60                       
(ii)100                         
(iii)80                          
(iv)140

e) How many students scored less than 60? 

(i)18                         
(ii)37                             
(iii)31                             
(iv)8 

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Answer 1

Answer:

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