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1. The
entities on which data are collected are
A.elements
B.populations
C.sets
D.samples
E.none
of the above
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2. The
set of measurements collected for a particular element is (are) called
A.census
B.variables
C.observations
D.samples
E.none
of the above
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3.
Quantitative data
A.are always nonnumeric
B.may be either numeric or nonnumeric
C.are always numeric
D.are always labels
E.none
of the above
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4. In
a questionnaire, respondents are asked to mark their gender. Gender is an
example of a
A.qualitative variable
B.quantitative variable
C.qualitative or quantitative variable, depending on how the
respondents answered the question
D.ratio variable
E.none
of the above
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5.
Temperature is an example of
A.a qualitative variable
B.a quantitative variable
C.either a quantitative or qualitative variable
D.neither a quantitative nor qualitative variable
E.none
of the above
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6.
Data collected at the same, or approximately the same point
in time are
A.time series data
B.approximate time series data
C.cross-sectional data
D.approximate data
E.none
of the above
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7. A
statistics professor asked students in a class their age. On the basis of
this information, the professor states that the average age of all the
students in the university is 23 years. This is an example of
A.a census
B.descriptive statistics
C.an experiment
D.statistical inference
E.none
of the above
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8. 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
E.none
of the above
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9. The
average age in a sample of 60 students at City College is 22. As a result of this
sample, it can be concluded that the average age of all the students at City
College
A.must be more than 22, since the population is always
larger than the sample
B.must be less than 22, since the sample is only a part of
the population
C.could be larger, smaller, or equal to 22
D.could not be 22
E.none
of the above
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10.
Statistical studies in which researchers control variables of interest are
A.experimental studies
B.control observational studies
C.non-experimental studies
D.observational studies
E.none
of the above
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