Question

Here are the shopping times in minutes) for a sample of 22 shoppers at a particular computer store: 26, 23, 44, 41, 38, 35, 31, 28, 25, 22, 43, 40, 21, 21, 43, 43, 43, 39, 39, 39, 36, 36 Draw the frequency polygon for these data using an initial class boundary of 20.5 and a class width of 5. Note that you can add or remove classes from the figure. Label each class with its midpoint. Frequency I:lolo:1 8 Х 5 ? 7 6+ 5+ 4 + 3 2 1 0 0 0 0 0 Time (in minutes)

Answer 1

Class	Mid value	Frequency
20.5 - 25.5	23	5
25.5 - 30.5	28	2
30.5 - 35.5	33	2
35.5 - 40.5	38	7
40.5 - 45.5	43	6
	Total	22

Frequency Polygon 8 7 6 Frequency 2 1 0 18 23 28 43 48 33 38 Timein minutes)

Answer 2

18 to 22 23 to 27 28 to 32 33 to 37