October 2015
Intermediate to advanced
588 pages
24h 51m
English
Content preview from Cyber-Physical Systems
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Big Data Analysis for Cyber-Physical Systems 503
Qualitative data: If data have no numerical value, that is, if they cannot be measured in numbers,
then this type of data are called qualitative data.
Qualitative data can be classified into two:
Nominal data: “Nominal” comes from the Latin word nomen, which means “name.” The data
that are differentiated by a naming system are called nominal data. Nominal data usually belong to a
definable category. Example: a set of groups.
Ordinal data: The data that show sequential symbols or letters are called ordinal data. Arithmetic
operations cannot be presented as ordinal data because they show only the sequence. This type of
data is also categorical because it belongs to a definable category. Example: first, ...
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