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What is the cumulative frequency of class interval 15 - 20?

0-5 \; \; \; \; \; \; \; \; \; \:\: \: 3

5-10 \; \; \; \; \; \; \; \; \; \: 2

10-15 \; \; \; \; \; \; \; \; \; 5

15-20 \; \; \; \; \; \; \; \; \; 6

20-25 \; \; \; \; \; \; \; \; \; 7

  • Option 1)

    5

  • Option 2)

    10

  • Option 3)

    16

  • Option 4)

    3

 

Answers (1)

best_answer

As we learned 

 

Cumulative frequency distribution -

The cumulative frequency of a value is its frequency plus the frequencies of all smaller values.

ex             x           f            c.f

                 0          2             2

                 1          4             6

                 2          4            10

                 3          6            16

                            16 

-

 

 Since crf=3+2+5=15

we add all the previous frequencies.

 


Option 1)

5

Option 2)

10

Option 3)

16

Option 4)

3

Posted by

Himanshu

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