The marks scored by 25 students in an examination is recorded as follows. 13, 16, 22, 32, 45, 23, 21, 34, 50, 42, 30, 11, 35, 30, 42, 43, з6, 21, 16, 43, 37, 26, 37, 46, 22 1) Construct a frequency distribution table with 6 classes. 2) Find relative frequency and cumulative frequency and relative frequency percentage 3) Draw a cumulative frequency curve 4) Find the average mark(mean) ( 5) How many students are below the average mark? ( 6) Find variance for the above data using the frequency table in Q.1

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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The marks scored by 25 students in an examination is recorded as follows.
13, 16, 22, 32, 45, 23, 21, 34, 50, 42, 30, 11,
35, 30, 42, 43, з6, 21, 16, 43, 37, 26, 37, 46, 22
1) Construct a frequency distribution table with 6 classes.,
2) Find relative frequency and cumulative frequency and relative frequency percentage
3) Draw a cumulative frequency curve
4) Find the average mark(mean)
5) How many students are below the average mark?
6) Find variance for the above data using the frequency table in Q.1
Transcribed Image Text:The marks scored by 25 students in an examination is recorded as follows. 13, 16, 22, 32, 45, 23, 21, 34, 50, 42, 30, 11, 35, 30, 42, 43, з6, 21, 16, 43, 37, 26, 37, 46, 22 1) Construct a frequency distribution table with 6 classes., 2) Find relative frequency and cumulative frequency and relative frequency percentage 3) Draw a cumulative frequency curve 4) Find the average mark(mean) 5) How many students are below the average mark? 6) Find variance for the above data using the frequency table in Q.1
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