Quantitative Research Techniques and
Statistics Questions and Answers
A company has developed a new smartphone whose average lifetime is unknown. In
order to estimate this average, 200 smartphones are randomly selected from a large
production line and tested; their average lifetime is found to be 5 years. The 200
smartphones represent a __________. - ANSWER-sample
Which of the following is a measure of the reliability of a statistical inference? -
ANSWER-A significance level
The process of using sample statistics to draw conclusions about population parameters
is called __________. - ANSWER-doing inferential statistics
Which of the following statements involve descriptive statistics as opposed to inferential
statistics? - ANSWER-The Alcohol, Tobacco and Firearms Department reported that
Houston had 1,791 registered gun dealers in 1997.
A population of all college applicants exists who have taken the SAT exam in the United
States in the last year. A parameter of the population are __________. - ANSWER-SAT
scores
Which of the following statements is true regarding the design of a good survey? -
ANSWER-The questions should be kept as short as possible
Two methods exist to create a sampling distribution. One involves using parallel
samples from a population and the other is to use the __________. - ANSWER-rules of
probability
The hypothesis of most interest to the researcher is __________. - ANSWER-the
alternative hypothesis
A Type I error occurs when we __________. - ANSWER-reject a true null hypothesis
Which method of data collection is involved when a researcher counts and records the
number of students wearing backpacks on campus on a given day? - ANSWER-Direct
observation
The manager of the customer service division of a major consumer electronics company
is interested in determining whether the customers who have purchased a
videocassette recorder over the past 12 months are satisfied with their products. If there
are four different brands of videocassette recorders made by the company, the best
sampling strategy would be to use a __________. - ANSWER-stratified random sample
Statistics Questions and Answers
A company has developed a new smartphone whose average lifetime is unknown. In
order to estimate this average, 200 smartphones are randomly selected from a large
production line and tested; their average lifetime is found to be 5 years. The 200
smartphones represent a __________. - ANSWER-sample
Which of the following is a measure of the reliability of a statistical inference? -
ANSWER-A significance level
The process of using sample statistics to draw conclusions about population parameters
is called __________. - ANSWER-doing inferential statistics
Which of the following statements involve descriptive statistics as opposed to inferential
statistics? - ANSWER-The Alcohol, Tobacco and Firearms Department reported that
Houston had 1,791 registered gun dealers in 1997.
A population of all college applicants exists who have taken the SAT exam in the United
States in the last year. A parameter of the population are __________. - ANSWER-SAT
scores
Which of the following statements is true regarding the design of a good survey? -
ANSWER-The questions should be kept as short as possible
Two methods exist to create a sampling distribution. One involves using parallel
samples from a population and the other is to use the __________. - ANSWER-rules of
probability
The hypothesis of most interest to the researcher is __________. - ANSWER-the
alternative hypothesis
A Type I error occurs when we __________. - ANSWER-reject a true null hypothesis
Which method of data collection is involved when a researcher counts and records the
number of students wearing backpacks on campus on a given day? - ANSWER-Direct
observation
The manager of the customer service division of a major consumer electronics company
is interested in determining whether the customers who have purchased a
videocassette recorder over the past 12 months are satisfied with their products. If there
are four different brands of videocassette recorders made by the company, the best
sampling strategy would be to use a __________. - ANSWER-stratified random sample
