6. The following table gives the frequency distribution of marks obtained by 150 students in a certain examination. Marks: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 No. of students: 7 10 20 40 30 28 10 5 From the above distribution, calculate the standard deviation and the co-efficient of varia- tion.
6. The following table gives the frequency distribution of marks obtained by 150 students in a certain examination. Marks: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 No. of students: 7 10 20 40 30 28 10 5 From the above distribution, calculate the standard deviation and the co-efficient of varia- tion.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.3: Special Probability Density Functions
Problem 7E
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Question
![6. The following table gives the frequency distribution of marks obtained by 150 students in a
certain examination.
Marks:
0–10
10-20
20-30
30-40
40–50
50–60
60–70
70-80
No. of students: 7
10
20
40
30
28
10
5
From the above distribution, calculate the standard deviation and the co-efficient of varia-
tion.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F480dfef1-032d-426c-9f27-8b484f35f0fa%2Fb6fd42d2-0b7d-49d7-912c-5a3faa9f60d3%2Flzzbie_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6. The following table gives the frequency distribution of marks obtained by 150 students in a
certain examination.
Marks:
0–10
10-20
20-30
30-40
40–50
50–60
60–70
70-80
No. of students: 7
10
20
40
30
28
10
5
From the above distribution, calculate the standard deviation and the co-efficient of varia-
tion.
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