A chain of sport shops catering to beginning skiers, headquartered in Aspen, Col

Question

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

Explanation / Answer

Minimum Value=82

Max. Value=263

Range=181

So, class interval should be of length (181+1)/5=36.4

so, the smallest class interval is [82-118.4)

A better interval would be to take integer class limits.

So, the classes are- [82-118], [119-155], [156-192], [193,229], [230,266]

Using a lower limit of 80-

Class Interval Frequency 80-120 8 120-160 20 160-200 9 200-240 6 240-280 1

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