Which of the Following Conditions Is Needed Regarding the Chi-Squared

question 38

Multiple Choice

Which of the following conditions is needed regarding the chi-squared test statistic for the test of variance?

• A) The population random variable must be normal.
• B) The test statistic must be a non-negative number.
• C) The test statistic must have a chi-squared distribution with n - 1 degrees of freedom.
• D) All of these choices are true.

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Definitions:

Regression Model

A statistical technique that models and approximates the relationship between a dependent and one or more independent variables.

Nonlinear Relationship

A type of relationship between two variables where a change in one variable does not lead to a constant change in the other variable.

Stepwise Regression Analysis

A method of fitting regression models where the choice of predictive variables is carried out by an automatic procedure.

Independent Variables

Variables in an experiment or model that are manipulated or categorized to observe their effect on the dependent variable, without being affected by any other variable in the experiment.