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, 36, 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
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, 36, 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
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 5E
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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, 36, 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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