Let X₁,X₂

question 176

Multiple Choice

Let X₁,X₂,...... ,X_k be a set of k continuous random variables.The function F(x₁,x₂,..... ,x_k) which defines the probability that simultaneously X₁ < x₁,X₂ < x₂ and so on is called a:

• A)marginal distribution function.
• B)marginal cumulative distribution function.
• C)joint cumulative distribution function.
• D)normal distribution function.

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Definitions:

Degrees of Freedom

A concept in statistical calculations used to adjust for the number of variables, indicating the amount of independent information available to estimate another parameter.

Goodness-of-Fit Test

A statistical test used to determine if a set of observed data matches the expected distribution.

Probability Distribution

A mathematical function that provides the probabilities of occurrence of different possible outcomes for an experiment.

Chi-Square Goodness-of-Fit Test

This statistical test evaluates if there is a significant difference between observed frequencies and expected frequencies in one or more categories.