Chapter 1—What is statistics?
MULTIPLE CHOICE
1. A politician who is running for the House of Representatives in the Australian Federal parliament with 70,000 registered voters in her electorate commissions a survey. In the survey, 52% of the 300 registered voters interviewed say they plan to vote for her. The sample is the:
A
70,000 registered voters in the electorate.
B
52% of, or 156, voters interviewed who plan to vote for her.
C
300 registered voters interviewed.
D
48% of, or 144, voters interviewed who plan not to vote for her.
ANS: C PTS: 1 DIF: Easy TOP: Key statistical concepts
2. A summary measure that is computed from a sample to describe a characteristic of the population is called:
A
a parameter.
B
a statistic.
C
a population.
D
None of these choices are correct.
ANS: B PTS: 1 DIF: Easy TOP: Key statistical concepts
3. A summary measure that is computed from a population is called:
A
a parameter.
B
a statistic.
C
a sample.
D
All of these choices are correct.
ANS: A PTS: 1 DIF: Easy TOP: Key statistical concepts
4. Descriptive statistics deals with methods of:
A
organising data.
B
summarising data.
C
presenting data in a convenient and informative way.
D
All of these choices are correct.
ANS: D PTS: 1 DIF: Easy TOP: Key statistical concepts
5. Which of the following statements is true?
A
Descriptive statistics never uses graphical techniques.
B
Descriptive statistics never uses numerical techniques.
C
Statistical inference is used to describe a sample of data.
D
Statistical inference is used to draw conclusions about characteristics of populations based on sample data.
ANS: D PTS: 1 DIF: Moderate TOP: Key statistical concepts
6. Which of the following best describes the data that is collected in a statistical study for only a portion or subset of all elements of interest?
A
A census.
B
A parameter.
C
A population.
D
A sample.
ANS: D PTS: 1 DIF: Moderate TOP: Key statistical concepts
MULTIPLE CHOICE
1. A politician who is running for the House of Representatives in the Australian Federal parliament with 70,000 registered voters in her electorate commissions a survey. In the survey, 52% of the 300 registered voters interviewed say they plan to vote for her. The sample is the:
A
70,000 registered voters in the electorate.
B
52% of, or 156, voters interviewed who plan to vote for her.
C
300 registered voters interviewed.
D
48% of, or 144, voters interviewed who plan not to vote for her.
ANS: C PTS: 1 DIF: Easy TOP: Key statistical concepts
2. A summary measure that is computed from a sample to describe a characteristic of the population is called:
A
a parameter.
B
a statistic.
C
a population.
D
None of these choices are correct.
ANS: B PTS: 1 DIF: Easy TOP: Key statistical concepts
3. A summary measure that is computed from a population is called:
A
a parameter.
B
a statistic.
C
a sample.
D
All of these choices are correct.
ANS: A PTS: 1 DIF: Easy TOP: Key statistical concepts
4. Descriptive statistics deals with methods of:
A
organising data.
B
summarising data.
C
presenting data in a convenient and informative way.
D
All of these choices are correct.
ANS: D PTS: 1 DIF: Easy TOP: Key statistical concepts
5. Which of the following statements is true?
A
Descriptive statistics never uses graphical techniques.
B
Descriptive statistics never uses numerical techniques.
C
Statistical inference is used to describe a sample of data.
D
Statistical inference is used to draw conclusions about characteristics of populations based on sample data.
ANS: D PTS: 1 DIF: Moderate TOP: Key statistical concepts
6. Which of the following best describes the data that is collected in a statistical study for only a portion or subset of all elements of interest?
A
A census.
B
A parameter.
C
A population.
D
A sample.
ANS: D PTS: 1 DIF: Moderate TOP: Key statistical concepts