a.
a sample
b.
a population
c.
statistical inference
d.
descriptive statistics
ANS: C PTS: 1 TOP: Descriptive Statistics
45. Five hundred residents of a city are polled to obtain information on voting intentions in an upcoming city election. The five hundred residents in this study is an example of a(n)
a.
census
b.
sample
c.
observation
d.
population
ANS: B PTS: 1 TOP: Descriptive Statistics
46. A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of
a.
a census
b.
descriptive statistics
c.
an experiment
d.
statistical inference
ANS: D PTS: 1 TOP: Statistical Inference
47. The owner of a factory regularly requests a graphical summary of all employees' salaries. The graphical summary of salaries is an example of
a.
a sample
b.
descriptive statistics
c.
statistical inference
d.
an experiment
ANS: B PTS: 1 TOP: Descriptive Statistics
48. The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of
a.
descriptive statistics
b.
statistical inference
c.
a sample
d.
a population
ANS: A PTS: 1 TOP: Statistical Inference
49. The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called
a.
descriptive statistics
b.
statistical inference
c.
data analysis
d.
data summarization
ANS: B PTS: 1 TOP: Descriptive Statistics
50. In a post office, the mailboxes are numbered from 1 to 4,500. These numbers represent
a.
categorical data
b.
quantitative data
c.
either categorical or quantitative data
d.
since the numbers are sequential, the data is quantitative
ANS: A PTS: 1 TOP: Descriptive Statistics