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1. The science of collecting, classifying, summarizing, organizing, analyzing,
and interpreting information is called:
A) Algebra
B) Statistics
C) Calculus
D) Geometry
Correct Answer: Statistics
Rationale: Statistics is defined as the science of collecting, classifying,
summarizing, organizing, analyzing, and interpreting information. Algebra,
calculus, and geometry are other branches of mathematics.
2. Data are defined as:
A) A summary of numerical information
B) Things about which information can be collected and analyzed
C) The average of a set of numbers
D) A graphical representation of information
Correct Answer: Things about which information can be collected and
analyzed
Rationale: Data (plural of datum) are things about which information can be
collected and analyzed. These "things" can be people, numerical information,
geographical areas, etc. Averages and graphs are ways to summarize or
present data.
,3. An arranged collection of information that contains the various categories
of data collected for a specific study is called a:
A) Population
B) Sample
C) Data set
D) Variable
Correct Answer: Data set
Rationale: A data set is an arranged collection of information that contains
the various categories of data collected for a specific study. A population is
the entire group, a sample is a subset, and a variable is a measurable
attribute.
4. The individual and unique entry in a data set about which data has been
collected, analyzed, and presented in the same manner is called the:
A) Variable
B) Element
C) Observation
D) Population
Correct Answer: Element
Rationale: The element of a data set is the individual and unique entry in a
data set about which data has been collected, analyzed, and presented in
the same manner. A variable is a measurable attribute, and an observation is
all information collected for an element.
5. A particular, measurable attribute that the researcher believes is needed
to describe the element in their study is called a:
, A) Data set
B) Element
C) Observation
D) Variable
Correct Answer: Variable
Rationale: A variable is a particular, measurable attribute that the researcher
believes is needed to describe the element in their study. Like the element, a
variable can include categories such as people, numerical information, or
geographical areas.
6. All the information collected for each element in a study is called a(n):
A) Variable
B) Element
C) Observation
D) Data set
Correct Answer: Observation
Rationale: All the information collected for each element in a study is called
an observation. While in some cases there will be only one variable, most
studies use many variables, and each element will have an observation for
each variable.
7. Numerical and graphical methods used to explore, summarize, and
present data are called:
A) Inferential statistics
B) Descriptive statistics