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:

$	145		$	85		$	139		$	161		$	175		$	85		$	133		$	149		$	136
	131			290			235			132			172			149			322			214			105
	220			126			90			171			162			229			121			113			149
	126			139			118			172			156			214			87			172			230
	162			195			128			126			142			118			127			139

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

2. What would be a better class interval?

3. Organize the data into a frequency distribution using a lower limit of $80.