Question: 16. An observation in a data set would refer to: A. only a variable whose value is recorded by visual inspection. B. a data item

16. An observation in a data set would refer to:

A. only a variable whose value is recorded by visual inspection.

B. a data item whose value is numerical (as opposed to categorical).

C. a single row that contains one or more observed variables.

D. the values of all the variables in the entire data set.

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