Line of best Fit

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What is the line of best fit?

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The line of best fit is a straight line that best represents the data on a scatter plot. It shows the general direction of the data points.

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How do you determine the slope of the line of best fit?

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The slope of the line of best fit is calculated by taking two points on the line and using the formula: slope = (y2 - y1) / (x2 - x1).

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What does a positive slope indicate in a line of best fit?

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A positive slope indicates that as one variable increases, the other variable also increases.

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What does a negative slope indicate in a line of best fit?

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A negative slope indicates that 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 data point that differs significantly from other observations. It may indicate variability in the measurement or a possible experimental error.

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How can you identify an outlier in a scatter plot?

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An outlier can be identified as a point that lies far away from the cluster of other points in the scatter plot.

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What is the purpose of the line of best fit?

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The purpose of the line of best fit is to summarize the relationship between two variables and to make predictions based on that relationship.

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

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No correlation means that there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

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What is the equation of a line in slope-intercept form?

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How do you find the y-intercept of a line of best fit?

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