DAT 565 Week 2 Exam Questions and Answers Latest Update 2025-2026
A (blank) includes all members of the group of interest - Answers .Population
Samples are primarily - Answers looking only at selected items from a population, used to make
inferences about population parameters
Census= it is sometimes mandated by legal requirements, it is an example of all items in a
population - Answers Sample= it looks at only selected items in a population, it is necessitated
because of budget constraints
Parameter- The average age of all students currently enrolled at the Leeds School of Business -
Answers Statistic- The average starting salary for 25 students from this year's Leeds' MBA
graduating class
Northern University's College of Business wants to determine the average starting salary for last
year's graduates of its College of Business; what is the population that the College should
survey from? - Answers All of last year's graduates from Northern's College of Business
In order to create a sample representative of the population, the analyst should use a (blank)
sampling technique. - Answers random
A (blank) is a subset of a population. - Answers sample
Which of the following characterize random sampling techniques? - Answers allows each
subject the same chance of being included in the sample, produce a sample representative of
the target population
Sampling is necessary when it is effectively impossible to survey the entire population. Which of
the following illustrates a situation where sampling, rather than surveying the entire population,
is necessary? - Answers a manufacturer of automobile tires wants to determine how long the
tread of its tires will last.
Which of the following sampling techniques are non-random? - Answers Focus groups,
convenience
A (blank) is a numerical summary of a sample, whereas a (blank) is a numerical summary that
describes a population. - Answers statistic/parameter
Sample size is determined by the inherent (blank) in the population of interest and the desired
(blank) of the parameter being estimated. - Answers variability, precision
Although less scientific, (blank) sampling is occasionally used for expediency. - Answers non-
random
Which type of error is unavoidable when sampling from a population? - Answers sampling error
A (blank) includes all members of the group of interest - Answers .Population
Samples are primarily - Answers looking only at selected items from a population, used to make
inferences about population parameters
Census= it is sometimes mandated by legal requirements, it is an example of all items in a
population - Answers Sample= it looks at only selected items in a population, it is necessitated
because of budget constraints
Parameter- The average age of all students currently enrolled at the Leeds School of Business -
Answers Statistic- The average starting salary for 25 students from this year's Leeds' MBA
graduating class
Northern University's College of Business wants to determine the average starting salary for last
year's graduates of its College of Business; what is the population that the College should
survey from? - Answers All of last year's graduates from Northern's College of Business
In order to create a sample representative of the population, the analyst should use a (blank)
sampling technique. - Answers random
A (blank) is a subset of a population. - Answers sample
Which of the following characterize random sampling techniques? - Answers allows each
subject the same chance of being included in the sample, produce a sample representative of
the target population
Sampling is necessary when it is effectively impossible to survey the entire population. Which of
the following illustrates a situation where sampling, rather than surveying the entire population,
is necessary? - Answers a manufacturer of automobile tires wants to determine how long the
tread of its tires will last.
Which of the following sampling techniques are non-random? - Answers Focus groups,
convenience
A (blank) is a numerical summary of a sample, whereas a (blank) is a numerical summary that
describes a population. - Answers statistic/parameter
Sample size is determined by the inherent (blank) in the population of interest and the desired
(blank) of the parameter being estimated. - Answers variability, precision
Although less scientific, (blank) sampling is occasionally used for expediency. - Answers non-
random
Which type of error is unavoidable when sampling from a population? - Answers sampling error
