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Concept explainers
Define (a) data, (b) data set (c) observation, and (d) variable.
a.
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Give the definition of data.
Explanation of Solution
Data:
Data is defined as a collection of items that an investigator studies. The term ‘data’ is used as a plural. The data is usually entered in a database in the form of a matrix.
b.
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Give the definition of data set.
Explanation of Solution
Data set:
A data set is the particular set of data that is being studied. It is a set of all variable values corresponding to all the observations under study.
c.
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Give the definition of observation.
Explanation of Solution
Observation:
An observation is defined as an entity in the collection of all items that are being studied by the investigator.
d.
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Give the definition of variable.
Explanation of Solution
Variable:
A variable is defined as a characteristic of each observation or each entity that is being studied by the investigator.
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Loose-leaf For Applied Statistics In Business And Economics
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