The Shape of the Normal Probability Distribution Is Determined by the Population

question 219

True/False

The shape of the normal probability distribution is determined by the population standard deviation σ.Small values of σ reduce the height of the curve and increase the spread;large values of σ increase the height of the curve and reduce the spread.

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Definitions:

Regression Model

A statistical approach for estimating the relationships among variables, often used for prediction and forecasting.

Dummy Variables

Variables created to assign numerical values to categorical data, often used in regression analysis to include qualitative factors as independent variables.

Qualitative Variables

Variables that categorize or describe attribute characteristics without a natural numerical order or ranking.

Regression Model

A mathematical model that describes the relationship between a dependent variable and one or more independent variables.