Question

Use the following data to answer questions 6-9:

Store #	Region	Cars Sold Today	Sales $
1	East	2	$   40,000
2	West	4	$   80,000
3	East	0	$         -
4	South	3	$   60,000
5	North	5	$ 100,000
6	North	4	$   80,000
7	South	3	$   60,000
8	South	1	$   20,000
9	East	5	$ 100,000
10	West	5	$ 100,000
11	East	4	$   80,000
12	West	6	$ 120,000
13	East	2	$   40,000
14	South	1	$   20,000
15	North	2	$   40,000
16	North	5	$ 100,000
17	South	5	$ 100,000
18	South	3	$   60,000
19	East	4	$   80,000
20	West	0	$         -

6) What is the correct number of classes to display the cars sold today in a histogram (using the methodology in the book)?

1. 3
2. 4
3. 5
4. 6

7) What is the relative frequency for 3 cars sold (rounded to a whole %)?

1. 9%
2. 15%
3. 27%
4. 36%

8) What is the cumulative relative frequency for 3 cars sold (rounded to a whole %)?

1. 9%
2. 14%
3. 50%
4. 36%

9) Which region had the highest Total Sales $?

1. North
2. East
3. West
4. South

Answer 1

7. Histogram

No. of classes = 6 (Option d)

7. No. of stores selling 3 cars = 2

Total no. of stores = 20

Relative frequency for 3 cars sold = 3/20*100 = 15% (Option B)

8. Cumulative relative frequency for 3 cars sold = 4+3+3 = 10

Percentage of Cumulative relative frequency for 3 cars sold = 10/20*100 = 50% (Option C)

10. Region with highest Total Sales: West (Option C)

Region	Total Sales
East	100000
West	220000
North	200000
South	100000