MdM4U AAL/AFL Ch 2: 1 and 2 Variable statistics Name date Problem Q1- K/5 Q2 T 16 Q3 A 18 1. Design a cluster-sample procedure to determine the favourite soft drink of the students in your school. Statsville High School has 240 students in grade 9, 220 in grade 10, 205 in grade 1 1, and 190 in grade 12. The administration wants to know if students would prefer a semestered timetable. Design a stratified-sampling procedure to sample 15% of the students. 3. The usage of a hospital X-ray machine was monitored for 9 days. The data, rounded to the nearest hour, are listed below. 3, 13, 9, 10, 13, 21 , 12, 23, 13 a) Calculate the mean, median, and mode for these data. b) Suggest a reason why you might want to exclude the lowest value from the calculations in part a)