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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter4: Equations Of Linear Functions
Section4.6: Regression And Median-fit Lines
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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
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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