Example 21. Find the standard deviation for the following distribution: Marks 10 - 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 70 – 80 No. of Students 5 12 15 20 10 4
Example 21. Find the standard deviation for the following distribution: Marks 10 - 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 70 – 80 No. of Students 5 12 15 20 10 4
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:Example 21. Find the standard deviation for the following distribution:
Marks
10 – 20
20 – 30
30 – 40
40 – 50
50 – 60
60 – 70
70 – 80
No. of Students
5
12
15
20
10
4
2
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