Scatter plot

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Scatter plot  continuous variables

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The equation of a straight line

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The equation of a straight line

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Linear relationship

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Linear and nonlinear relationship

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Sample coefficient of correlation

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The size and direction of a linear relationship

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The size and direction of a linear relationship

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Correlation and causation

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The linear regression model

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The least squares method

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The least squares method

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The least squares regression line

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Residuals

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Residual plot

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Interpolation

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Extrapolation

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Coefficient of determination

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Outliers and influential measurements

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Outliers and influential measurements

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Treatment of outliers and influential measurements

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The linear regression model

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The random variable $\varepsilon$

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Confidence interval for $\beta_0$

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Confidence interval for $\beta_1$

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Prediction interval

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Hypothesis test for the correlation coefficient

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