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The histogram shows the finishing times of the runners in a 10km cross-country race. 10km cross-country times 12- 10- 8- 6- 4- 2- o 30 40 50 60 70 80 90 Time (mins) a How many runners were in the race? b There was a target time of 67 minutes. How many runners failed to meet the target time? c i Create a grouped frequency table using the information in the histogram. ii Use your table to calculate an estimate of the mean time. Frequency density

The histogram shows the finishing times of the runners in a 10km cross-country race. 10km cross-country times 12- 10- 8- 6- 4- 2- o 30 40 50 60 70 80 90 Time (mins) a How many runners were in the race? b There was a target time of 67 minutes. How many runners failed to meet the target time? c i Create a grouped frequency table using the information in the histogram. ii Use your table to calculate an estimate of the mean time. Frequency density

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 4CA
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3. The histogram shows the finishing times of the runners in a 10km cross-country race. 10km cross-country times 12- 10- 8- 6- 2- O 30 40 50 60 70 80 90 Time (mins) a How many runners were in the race? b There was a target time of 67 minutes. How many runners failed to meet the target time? c i Create a grouped frequency table using the information in the histogram. ii Use your table to calculate an estimate of the mean time. Frequency density
Transcribed Image Text:3. The histogram shows the finishing times of the runners in a 10km cross-country race. 10km cross-country times 12- 10- 8- 6- 2- O 30 40 50 60 70 80 90 Time (mins) a How many runners were in the race? b There was a target time of 67 minutes. How many runners failed to meet the target time? c i Create a grouped frequency table using the information in the histogram. ii Use your table to calculate an estimate of the mean time. Frequency density
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