Homework_2 Deadline: 27/02/14

Task 1. For the following data, construct a frequency distribution with six classes. 57 23 46 23 39 33 35 50 28 18 41 20 21 19 26 36 51 28 47 31 29 42 21 52 46 29 43 18 29 28

Task 2. For each class interval of frequency distribution given, determine the class midpoint, the relative frequency, and cumulative frequency. Interpret your findings. Class interval 20 – 25 25.1 – 30 30.1 – 35 35.1 – 40 40.1 – 45 45.1 – 50 Frequency 17 20 16 15 8 6

Task 3. A chain of sport shops catering to beginning skiers, headquartered in Aspen, Colorado, plans to conduct a study of how much a beginning skier spends on his or her initial purchase of equipment and supplies. Based on these figures, they want to explore the possibility of offering combinations, such as a pair of boots and a pair of skis, to induce customers to buy more. A sample of their cash register receipts revealed these initial purchases: $140 $82 86 125 $265 $168 $90 235 132 172 149 212 105 220 126 171 162 229 121 $114 $172 $230 $142 149 126 129 118 156 216 87 172 162 195 128 126 118 127 126

139 149 161 135 175 127

a) Arrive a suggested class interval. Use five classes, and let the lower limit of the first class to be $80. b) What would be a better class interval? c) Organize the data into a frequency distribution using a lower limit of $80. d) Interpret your findings.