Exam 13: Simple Linear Regression and Correlation: Inferential Methods

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The general form of additive probabilistic model is y = deterministic function + random deviation.

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A standardized residual plot with spread increasing from left to right suggests that the variance of y is not the same at each x value.

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The simple linear regression model is a deterministic model.

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A residual is a deviation from the population regression line.

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In the simple linear regression model, the randomness of e implies that y itself is subject to uncertainty.

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In the simple linear regression model, aandbare fixed numbers that are usually unknown.

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The mean value of the statistic b isb .

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A deterministic relationship between variables x and y is one in which the value of y is completed determined by the value of x.

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The population correlationris always between 0 and 1.

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In the simple linear regression, the standard deviation of y is the same as the standard deviation of the random deviation e.

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