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:

$ 144 $ 82 $ 139 $ 161 $ 175 $ 82 $ 129 $ 149 $ 138 133 215 210 132 172 149 168 200 105 215 126 90 171 162 209 121 114 149 126 126 118 172 156 200 73 172 205 162 195 128 126 142 118 127 126

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

What would be a better class interval?

Organize the data into a frequency distribution using a lower limit of $70.