Question

for the following distribution below 10 3 below 2012 below 3027 below 4057 below 50 75 below 60 80 ​

Answer 1

Answer:

The modal class is 30 - 40.

Step-by-step explanation:

The given table:

Marks.                  Number of students             Frequency

(Class interval)    Cumulative Frequency           (f)

0 - 10                   3                                                3

10 - 20                 12                                              9

20 - 30                27                                             15

30 - 40                57                                             30

40 - 50                75                                              18

50 - 60               80                                              5

As the class interval 30 - 40 has maximum frequency,

∴ The modal class = 30 - 40

Hence, the modal class is 30 - 40.

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Answer 2

Answer:

Marks. Number of students

Below 10. ---------- 3

Below 20. ---------- 12

Below 30. ---------- 27

Below 40. ---------- 57

Below 50. ---------- 75

Below 60. ---------- 80

Step-by-step explanation:

So the mode class will be 30 - 40