1. a)Find the smallest class interval. Use five classes. (Round your answer to 1 decimal place.) b) What would be a better class interval? c)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 4BGP
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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, it wants 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 44 cash register receipts revealed these initial purchases:
 

$ 140 $ 83 $ 139 $ 161 $ 175 $ 83 $ 129 $ 149 $ 141
130 264 231 132 172 149 170 214 105
220 126 90 171 162 229 121 117 149
126 130 118 172 156 214 87 172 230
162 195 128 126 142 118 127 130  

1. a)Find the smallest class interval. Use five classes. (Round your answer to 1 decimal place.)

b) What would be a better class interval?

c) 

 

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