Line of Best Fit

Front

What is a Line of Best Fit?

Back

A Line of Best Fit is a straight line that best represents the data on a scatter plot, showing the general direction of the data points.

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How do you determine the Line of Best Fit on a scatter plot?

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The Line of Best Fit can be determined by visually assessing the data points and drawing a line that minimizes the distance from all points to the line.

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What does a positive correlation indicate in a scatter plot?

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A positive correlation indicates that as one variable increases, the other variable also tends to increase.

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What does a negative correlation indicate in a scatter plot?

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A negative correlation indicates that as one variable increases, the other variable tends to decrease.

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What does it mean if there is no correlation in a scatter plot?

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No correlation means there is no apparent relationship between the two variables; the data points do not show any trend.

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How can you use a scatter plot to make predictions?

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You can use the Line of Best Fit to estimate the value of one variable based on the value of another variable.

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What is the purpose of a scatter plot?

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A scatter plot is used to visually display the relationship between two quantitative variables.

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What is the significance of the slope in a Line of Best Fit?

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The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

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How can outliers affect the Line of Best Fit?

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Outliers can skew the Line of Best Fit, making it less representative of the overall data trend.

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What is interpolation in the context of scatter plots?

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Interpolation is estimating a value within the range of the data points using the Line of Best Fit.