IQuestion 2] In a survey, the total number of months certain brands of tyre took before going bad were noted and recorded in the following grouped frequency table: Number of months Number of Tyres gone 10 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 12 15 8 14 11 7 bad (frequency) a. Calculate the mean number of months it took for the tyres to go bad. b. Calculate variance from the above table. c. Calculate the standard deviation. d. Using the standard deviation, comment on the mean number of months it took the tyres to go bad.
IQuestion 2] In a survey, the total number of months certain brands of tyre took before going bad were noted and recorded in the following grouped frequency table: Number of months Number of Tyres gone 10 0-9 10-19 20-29 30-39 40-49 50-59 60-69 70-79 12 15 8 14 11 7 bad (frequency) a. Calculate the mean number of months it took for the tyres to go bad. b. Calculate variance from the above table. c. Calculate the standard deviation. d. Using the standard deviation, comment on the mean number of months it took the tyres to go bad.
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 10CT
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![IQuestion 2]
In a survey, the total number of months certain brands of tyre took before going bad were
noted and recorded in the following grouped frequency table:
0-9 10-19 | 20-29 | 30-39 | 40-49 50-59 | 60-69 70-79
Number of months
Number of Tyres gone 10
12
15
14
11
7
bad
(frequency)
a. Calculate the mean number of months it took for the tyres to go bad.
b. Calculate variance from the above table.
c. Calculate the standard deviation.
d. Using the standard deviation, comment on the mean number of months it took the tyres
to go bad.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcc8b4e33-200f-4136-a5a9-8c4b487db8eb%2Fb456ca08-0795-4329-b3d7-9c422c0a895b%2Fqqlbjcn_processed.jpeg&w=3840&q=75)
Transcribed Image Text:IQuestion 2]
In a survey, the total number of months certain brands of tyre took before going bad were
noted and recorded in the following grouped frequency table:
0-9 10-19 | 20-29 | 30-39 | 40-49 50-59 | 60-69 70-79
Number of months
Number of Tyres gone 10
12
15
14
11
7
bad
(frequency)
a. Calculate the mean number of months it took for the tyres to go bad.
b. Calculate variance from the above table.
c. Calculate the standard deviation.
d. Using the standard deviation, comment on the mean number of months it took the tyres
to go bad.
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