# ch2_sol - Chapter 2 Solutions to Even Problems 2.4 a The...

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Chapter 2 Solutions to Even Problems 2.4 a. The variable (Reason) is qualitative. It’s possible values are Infant Child Medical Infant & medical Child & medical Infant & child Infant & child & medical b. Reason Number Relative Freq Infant 1852 1852 / 30337 = 0.061048 Child 17148 0.565250 Medical 8377 0.276131 Infant & medical 44 0.001450 Child & medical 903 0.029766 Infant & child 1878 0.061905 Infant & child & medical 135 0.004450 Total 30337 1.000000 c. Either a pie chart or bar chart is appropriate here. 0.1% 0.4% 3.0% 6.1% 6.2% 27.6% 56.5% Category Child & medical Infant & child & medical Infant & medical Child Medical Infant & child Infant Pie Chart of Reason

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Reason Number Inf ant  & m edical Inf a n c hi l d & me di c al C h il d &   medic al Inf ant I nfa nt  &   c hi ld M edical C hild 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 Chart of Number vs Reason d. (8377 + 44 + 903 + 135) / 30337 = .312 2.6 a. Cause Category Number of Incidents Relative Freq Engineering & Design 27 0.325 Procedures & Practices 24 0.289 Management & Oversight 22 0.265 Training & Communication 10 0.120 Total 83 1.000
b, Tm&Comm Mgmt&Over Proc&Pract Eng&Des 35 30 25 20 15 10 5 0 Category Percent of Frequency Management System Cause Category Percent within all data. c. The category with the highest relative frequency of incidents is Engineering and Design

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