b) The following table shows the time students from a college took to complete a marathon. Time (minutes) 30-32 33-37 38-44 45-47 Frequency 9. 14 3 a Frequency Density 3 4 b i) ii) iii) iv) Find the value of a and b. Calculate the mean time Calculate the mode Calculate the variance
b) The following table shows the time students from a college took to complete a marathon. Time (minutes) 30-32 33-37 38-44 45-47 Frequency 9. 14 3 a Frequency Density 3 4 b i) ii) iii) iv) Find the value of a and b. Calculate the mean time Calculate the mode Calculate the variance
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.1: Equations
Problem 78E
Related questions
Question
Please do iv. Calculate the variance only
![b) The following table shows the time students from a college took to complete a marathon.
Time (minutes)
30-32
33-37
38-44
45-47
Frequency
9
14
3
Frequency Density
3
1
i)
ii)
iii)
Find the value of a and b.
Calculate the mean time
Calculate the mode
iv)
Calculate the variance](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fab89f2fd-2d90-4d55-9e01-3ab3450cbdbc%2F35590eb9-c275-4a28-9558-2459a4956879%2F8tjjla8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:b) The following table shows the time students from a college took to complete a marathon.
Time (minutes)
30-32
33-37
38-44
45-47
Frequency
9
14
3
Frequency Density
3
1
i)
ii)
iii)
Find the value of a and b.
Calculate the mean time
Calculate the mode
iv)
Calculate the variance
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