Bivariate Statistics

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What is Bivariate Statistics?

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Bivariate Statistics is the branch of statistics that deals with the relationship between two variables. It involves analyzing the correlation, regression, and distribution of two variables.

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What is a line of best fit?

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A line of best fit is a straight line that best represents the data on a scatter plot. It is used to predict values and understand the relationship between two variables.

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What does the correlation coefficient (r) indicate?

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The correlation coefficient (r) indicates the strength and direction of a linear relationship between two variables. It ranges from -1 to 1.

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What does an r value of 0 indicate?

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An r value of 0 indicates no correlation between the two variables.

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What does an r value of 1 indicate?

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An r value of 1 indicates a perfect positive correlation, meaning as one variable increases, the other variable also increases.

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What does an r value of -1 indicate?

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An r value of -1 indicates a perfect negative correlation, meaning as one variable increases, the other variable decreases.

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What is an outlier in a scatter plot?

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An outlier is a point that is far outside the main cluster of points in a scatter plot, which can affect the line of best fit.

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How do you calculate the line of best fit using a graphing calculator?

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To calculate the line of best fit using a graphing calculator, input the data points, select the regression option, and choose the type of regression (linear, quadratic, etc.).

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What is the formula for a linear equation?

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What is the slope in a linear equation?

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The slope (m) in a linear equation represents the rate of change of the dependent variable (y) with respect to the independent variable (x).