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Okay so plz answer this question step by step,, thank you


Okay so plz answer this question step by step,, thank you ​-example-1
User Cokegod
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Given:

Total number of students = 20

The marks of the students are 40, 22, 36, 27, 30, 12, 15, 20, 25, 31, 34, 36, 39, 41, 43, 48, 46, 36, 37 and 40.

To find:

The frequency distribution table with class size 10.

Solution:

We have, the marks of 20 students.

40, 22, 36, 27, 30, 12, 15, 20, 25, 31, 34, 36, 39, 41, 43, 48, 46, 36, 37, 40

Here,

Minimum value = 12

Maximum value = 48

We nee class intervals of size 10. So, the required class intervals are 10-20, 20-30, 30-40, 40-50. In these intervals, lower limit is excluded but the upper limit included.

The required frequency distribution table is

Class intervals Marks Frequency

10-20 12, 15 2

20-30 22, 27, 20, 25 4

30-40 36, 30, 31, 34, 36, 39, 36, 37 8

40-50 40, 41, 43, 48, 46, 40 6

Total 20

Therefore, the frequency distribution table is

Class intervals: 10-20 20-30 30-40 40-50 Total

Frequency : 2 4 8 6 20

User MvdD
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