Exhibit 2-4
Michael's Compute-All, a national computer retailer, has kept a record of the number of laptop computers they have sold for a period of 80 days. Their sales records are shown below:
Number of Laptops Sold |
Number of Days |
||
0 - 19 |
5 |
||
20 - 39 |
15 |
||
40 - 59 |
30 |
||
60 - 79 |
20 |
||
80 - 99 |
10 |
||
Total 80 |
14. Refer to Exhibit 2-4. The class width of the above distribution is
a. |
0 to 100 |
b. |
20 |
c. |
80 |
d. |
5 |
15. Refer to Exhibit 2-4. The lower limit of the first class is
a. |
5 |
b. |
80 |
c. |
0 |
d. |
20 |
16. Refer to Exhibit 2-4. If one develops a cumulative frequency distribution for the above data, the last class will have a frequency of
a. |
10 |
b. |
100 |
c. |
0 to 100 |
d. |
80 |
17. Refer to Exhibit 2-4. The percentage of days in which the company sold at least 40 laptops is
a. |
37.5% |
b. |
62.5% |
c. |
90.0% |
d. |
75.0% |
18. Refer to Exhibit 2-4. The number of days in which the company sold less than 60 laptops is
a. |
20 |
b. |
30 |
c. |
50 |
d. |
60 |
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