The following data-set gives mid-values and frequencies. Calculate its mode.

Mid-value

frequncy

5

7

10

13

15

19

20

24

25

32

30

28

35

17

40

8

45

6

 

Mid- valueClass intervalFrequency (f)Cumulative frequency (c.f)
52.5-7.577
107.5-12.51320
1512.5-17.51939
2017.5-22.563
2522.5-27.595
3027.5-32.5123
3532.5-37.517140
4037.5-42.58148
4542.5-47.56154
    

By looking at the frequencies, we can say that the mode lies in class interval (22.5 - 27.5).

Therefore, mode is equal to 25.83.

  • 1
What are you looking for?