Categorical Data

question 5

Multiple Choice

Categorical data

• A) must be numeric.
• B) must be nonnumeric.
• C) cannot be numeric.
• D) may be either numeric or nonnumeric.

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Definitions:

Mean

The arithmetic average of a set of numbers, calculated by adding all the numbers together and dividing by the count of numbers.

Variance

A measure of the dispersion or spread of a set of data points around their mean value.

Degrees of Freedom

The number of independent values or quantities that can vary in the calculation of a statistic, often necessary for assessing the significance of the statistic.

Student t Distribution

The Student t-distribution is a probability distribution used in statistics, especially in situations where the sample size is small and the population variance is unknown.