Question
Download Solution PDFThe data given below shows the marks obtained by various students.
|
Marks |
Number of students |
|
10 – 12 |
6 |
|
12 – 14 |
8 |
|
14 – 16 |
5 |
|
16 – 18 |
7 |
|
18 - 20 |
4 |
What is the mean marks (Correct up to two decimal places) of given data?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF⇒ n = total frequency
Mid value of 10 – 12 = (10 + 12)/2 = 11
Mid value of 12 – 14 = (12 + 14 )/2 = 13
Mid value of 14 – 16 = (14 + 16 )/2 = 15
Mid value of 16 – 18 = (16 + 18 )/2 = 17
Mid value of 18 – 20 = (18 + 20 )/2 = 19
⇒ Mean = 14.67
∴The mean marks of the given data are 14.67
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