The Limitation of Covariance as a Descriptive Measure of Association

question 33

Multiple Choice

The limitation of covariance as a descriptive measure of association is that it

• A)Only captures positive relationships
• B)Does not capture the units of the variables
• C)Is very sensitive to the units of the variables
• D)Is invalid if one of the variables is categorical
• E)None of these options

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Definitions:

Normal Approximation

A method used to approximate the distribution of various sample statistics to the normal distribution under certain conditions.

Nonzero Differences

Refers to the outcomes in statistical analyses where the differences between compared measures or values are not equal to zero, indicating variability or effect.

Binomial Distribution

The binomial distribution is a probability distribution that summarizes the likelihood of obtaining a fixed number of successes in a fixed number of trials in a binary context, where there are only two possible outcomes.

Sign Test

A non-parametric test used to determine if the median of a population differs from a specified value by examining the signs (+, -, =) of the differences rather than their magnitudes.