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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
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 5CR
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Question 7 The grouped frequency table summarizes the examination results of this group of students. Examinatlon result (x) 0<xs 20 20 <xS 40 40 <xS 60 60 <xs 80 so <xs 100 Frequency 150 350 1100 1400 200 The teacher sets a grade boundary that is one standard deviation below the mean. Use the cumulative frequency graph to estimate the number of students whose final examination result was below this grade boundary. Use the grouped data to estimate the standard deviation and then use the chart Number of Students =
Transcribed Image Text:Question 7 The grouped frequency table summarizes the examination results of this group of students. Examinatlon result (x) 0<xs 20 20 <xS 40 40 <xS 60 60 <xs 80 so <xs 100 Frequency 150 350 1100 1400 200 The teacher sets a grade boundary that is one standard deviation below the mean. Use the cumulative frequency graph to estimate the number of students whose final examination result was below this grade boundary. Use the grouped data to estimate the standard deviation and then use the chart Number of Students =
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