9. The Department of Transportation of a city has noted that on the average there are 14 accidents per day. The average number of accidents is an example of
a. descriptive statistics b. statistical inference c. a sample d. a population ____ 10. The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called
____ 11. In a post office, the mailboxes are numbered from 1 to 5,000. These numbers represent
____ 12. Since a sample is a subset of the population, the sample mean
____ 13. In a stem-and-leaf display,
a. a single digit is used to define each stem, and a single digit is used to define each leaf b. a single digit is used to define each stem, and one or more digits are used to define each leaf c. one or more digits are used to define each stem, and a single digit is used to define each leaf d. one or more digits are used to define each stem, and one or more digits are used to define each leaf ____ 14. A frequency distribution is
____ 15. In a cumulative frequency distribution, the last class will always have a cumulative frequency equal to
Exhibit 2-3
The number of sick days taken (per month) by 200 factory workers is summarized below. Number of Days
Frequency
1
5
120

6
10 11 15 16 20 ____ 65 14 1

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- Fall '15
- Dr.NazifDurmaz
- Statistics, Standard Deviation, d. disaggregation