If the Standard Deviation of One of the Variables Equals

question 71

True/False

If the standard deviation of one of the variables equals zero, r cannot be calculated.

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Definitions:

Paired Observations

Data collected in pairs such that each observation in one group is related or matched to an observation in another group.

Spearman Rank Correlation

An unparametric method for determining rank correlation that evaluates the extent to which two variables' relationship can be characterized by a monotonic function.

Ordinal Variables

Variables that represent categories with a natural order but which do not have a fixed interval between values, allowing for ranking but not quantifiable difference measurement.

Interval Variables

Variables that have meaningful distances between measurements but do not have a true zero point, allowing for both positive and negative values.