Chapter 1
Introduction
True/False Questions
Section One
1. A population is a subset or subcollection of the sample.
False; Easy
2. A sample is a subset or subcollection of the population.
True; Easy
3. The sample consisting of the whole population is termed a census.
True; Easy
4. The measurements of sample elements are collectively called the population data.
False; Easy
5. A parameter is a number that summarizes some aspect of the population as a whole while
a statistic summarizes some aspect of the sample data.
True; Easy
6. Inferential statistics is the branch of statistics that involves organizing, displaying, and
describing data.
False; Easy
7. Descriptive statistics is the branch of statistics that involves drawing conclusions about a
population based on information contained in a sample taken from that population.
True; Easy
8. Quantitative data are nonnumerical measurements that arise from a natural nonnumerical
scale.
False; Easy
9. Qualitative data deals with measurements for which there is no natural numerical scale,
but which consist of attributes, labels, or other nonnumerical characteristics.
True; Easy
Section Two
10. Statistics computed from samples vary randomly from sample to sample.
True; Easy
,Multiple Choice Questions
Section One
11. A(n) _____ is any specific collections of objects of interest.
a. population
b. parameter
c. statistic
d. estimate
e. estimator
a; Easy
12. A(n) _____ is any subset or subcollection of the population.
a. parameter
b. sample
c. statistic
d. estimate
e. estimator
b; Easy
13. Which of the following data sets represents a population?
a. Heights of all students in a college
b. Scores of randomly selected group of students
c. Weights of ten girls in a class of 30 students
d. Ages of voters who registered on a particular day
e. Any five day’s temperature readings of the last month
a; Easy
14. Which of the following data sets represents a sample?
a. Heights of all students in a college
b. Scores of students in the tenth grade
c. Weights of newborns in a hospital
d. Ages of voters who registered on a particular day
e. Temperature readings for the year 2011
d; Easy
15. A sample consisting of the whole population is called _____.
a. parameter
b. estimator
c. statistic
d. sample data
e. census
e; Easy
16. In which of the following situations is a census preferred over a sample?
a. A study on the number of people in each household in Alaska
b. A study on the percentage of Spanish population that has access to internet
c. A study on the average lasting of a concrete trade of batteries
d. A study on the average lifetime of electric bulbs manufactured by a company
, e. A study on the success rate of a particular drug
e; Easy
17. A(n) _____ is a number or attribute computed for each member of a population or of a
sample.
a. statistic
b. data
c. measurement
d. estimator
e. parameter
c; Easy
18. The measurements of sample elements are collectively called the _____ data.
a. raw
b. population
c. sample
d. collective
e. elementary
c; Easy
19. A(n) _____ is a number that summarizes some aspect of the population as a whole.
a. sample
b. population
c. statistic
d. parameter
e. estimator
d; Easy
20. A(n) _____ is a number that summarizes some aspect of the sample data.
a. sample
b. population
c. residual
d. parameter
e. statistic
e; Easy
21. A researcher wants to determine the average income of the people of Omaha, Nebraska.
He found that there are 385,600 employed people in the state. A group of 1,200 people
are selected randomly to ascertain the income of each of those individuals. He finds that
the average income of those 1,200 numbers to be $42,827. Identify the population in this
context.
a. 385,600 employed people in Omaha
b. 1,200 people selected for the study
c. Average income of $42,827
d. 385,600 – 1,200 constitute the population
e. 385,600 + 1,200 constitute the population
a; Easy
, 22. A researcher wants to determine the average income of the people of Omaha, Nebraska.
He found that there are 385,600 employed people in the state. A group of 1,200 people
are selected randomly to ascertain the income of each of those individuals. He finds that
the average income of those 1,000 numbers to be $42,827. Identify the sample in this
context.
a. 385,600 employed people in Omaha
b. 1,200 people selected for the study
c. Average income of $42,827
d. 385,600 – 1,200 constitute the population
e. 385,600 + 1,200 constitute the population
b; Easy
23. A researcher wants to determine the average income of the people of Omaha, Nebraska.
He found that there are 385,600 employed people in the state. A group of 1,200 people
are selected randomly to ascertain the income of each of those individuals. He finds that
the average income of those 1,000 numbers to be $42,827. Identify the parameter in this
context.
a. 385,600 employed people in Omaha
b. 1,200 people selected for the study
c. Average income of $42,827
d. 385,600 – 1,200 constitute the population
e. 385,600 + 1,200 constitute the population
c; Easy
24. As a part of his study, a researcher is interested to ascertain the proportion of people in a
locality who are above the age of 80. He takes a random sample of 2,400; 120 of them are
above the age of 80, hence 120/2,400 ≈ 0.05 or about 5% are above 80.What is the value
of the statistic in this context?
a. 2,400
b. 100
c. 80
d. 0.05 or 5%
e. 2,400/120
d; Easy
25. _____ is a collection of methods for collecting, displaying, analyzing, and drawing
conclusions from data.
a. Statistics
b. Statistic
c. Parameter
d. Estimator
e. Estimate
a; Easy
26. _____ is the branch of statistics that involves organizing, displaying, and describing data.
a. Inferential statistics
b. Descriptive statistics
c. Mathematical statistics
d. Organizational statistics
e. Traditional statistics
Introduction
True/False Questions
Section One
1. A population is a subset or subcollection of the sample.
False; Easy
2. A sample is a subset or subcollection of the population.
True; Easy
3. The sample consisting of the whole population is termed a census.
True; Easy
4. The measurements of sample elements are collectively called the population data.
False; Easy
5. A parameter is a number that summarizes some aspect of the population as a whole while
a statistic summarizes some aspect of the sample data.
True; Easy
6. Inferential statistics is the branch of statistics that involves organizing, displaying, and
describing data.
False; Easy
7. Descriptive statistics is the branch of statistics that involves drawing conclusions about a
population based on information contained in a sample taken from that population.
True; Easy
8. Quantitative data are nonnumerical measurements that arise from a natural nonnumerical
scale.
False; Easy
9. Qualitative data deals with measurements for which there is no natural numerical scale,
but which consist of attributes, labels, or other nonnumerical characteristics.
True; Easy
Section Two
10. Statistics computed from samples vary randomly from sample to sample.
True; Easy
,Multiple Choice Questions
Section One
11. A(n) _____ is any specific collections of objects of interest.
a. population
b. parameter
c. statistic
d. estimate
e. estimator
a; Easy
12. A(n) _____ is any subset or subcollection of the population.
a. parameter
b. sample
c. statistic
d. estimate
e. estimator
b; Easy
13. Which of the following data sets represents a population?
a. Heights of all students in a college
b. Scores of randomly selected group of students
c. Weights of ten girls in a class of 30 students
d. Ages of voters who registered on a particular day
e. Any five day’s temperature readings of the last month
a; Easy
14. Which of the following data sets represents a sample?
a. Heights of all students in a college
b. Scores of students in the tenth grade
c. Weights of newborns in a hospital
d. Ages of voters who registered on a particular day
e. Temperature readings for the year 2011
d; Easy
15. A sample consisting of the whole population is called _____.
a. parameter
b. estimator
c. statistic
d. sample data
e. census
e; Easy
16. In which of the following situations is a census preferred over a sample?
a. A study on the number of people in each household in Alaska
b. A study on the percentage of Spanish population that has access to internet
c. A study on the average lasting of a concrete trade of batteries
d. A study on the average lifetime of electric bulbs manufactured by a company
, e. A study on the success rate of a particular drug
e; Easy
17. A(n) _____ is a number or attribute computed for each member of a population or of a
sample.
a. statistic
b. data
c. measurement
d. estimator
e. parameter
c; Easy
18. The measurements of sample elements are collectively called the _____ data.
a. raw
b. population
c. sample
d. collective
e. elementary
c; Easy
19. A(n) _____ is a number that summarizes some aspect of the population as a whole.
a. sample
b. population
c. statistic
d. parameter
e. estimator
d; Easy
20. A(n) _____ is a number that summarizes some aspect of the sample data.
a. sample
b. population
c. residual
d. parameter
e. statistic
e; Easy
21. A researcher wants to determine the average income of the people of Omaha, Nebraska.
He found that there are 385,600 employed people in the state. A group of 1,200 people
are selected randomly to ascertain the income of each of those individuals. He finds that
the average income of those 1,200 numbers to be $42,827. Identify the population in this
context.
a. 385,600 employed people in Omaha
b. 1,200 people selected for the study
c. Average income of $42,827
d. 385,600 – 1,200 constitute the population
e. 385,600 + 1,200 constitute the population
a; Easy
, 22. A researcher wants to determine the average income of the people of Omaha, Nebraska.
He found that there are 385,600 employed people in the state. A group of 1,200 people
are selected randomly to ascertain the income of each of those individuals. He finds that
the average income of those 1,000 numbers to be $42,827. Identify the sample in this
context.
a. 385,600 employed people in Omaha
b. 1,200 people selected for the study
c. Average income of $42,827
d. 385,600 – 1,200 constitute the population
e. 385,600 + 1,200 constitute the population
b; Easy
23. A researcher wants to determine the average income of the people of Omaha, Nebraska.
He found that there are 385,600 employed people in the state. A group of 1,200 people
are selected randomly to ascertain the income of each of those individuals. He finds that
the average income of those 1,000 numbers to be $42,827. Identify the parameter in this
context.
a. 385,600 employed people in Omaha
b. 1,200 people selected for the study
c. Average income of $42,827
d. 385,600 – 1,200 constitute the population
e. 385,600 + 1,200 constitute the population
c; Easy
24. As a part of his study, a researcher is interested to ascertain the proportion of people in a
locality who are above the age of 80. He takes a random sample of 2,400; 120 of them are
above the age of 80, hence 120/2,400 ≈ 0.05 or about 5% are above 80.What is the value
of the statistic in this context?
a. 2,400
b. 100
c. 80
d. 0.05 or 5%
e. 2,400/120
d; Easy
25. _____ is a collection of methods for collecting, displaying, analyzing, and drawing
conclusions from data.
a. Statistics
b. Statistic
c. Parameter
d. Estimator
e. Estimate
a; Easy
26. _____ is the branch of statistics that involves organizing, displaying, and describing data.
a. Inferential statistics
b. Descriptive statistics
c. Mathematical statistics
d. Organizational statistics
e. Traditional statistics
