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 overall trend of the data points.

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When is there no line of best fit for a scatter plot?

Back

There is no line of best fit when the data points do not show any clear trend or pattern.

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

Back

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

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

Back

A negative slope indicates that as one variable increases, the other variable decreases.

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How can you determine the line of best fit visually?

Back

You can determine the line of best fit visually by drawing a line that has approximately equal numbers of points above and below it.

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What is the purpose of the line of best fit in data analysis?

Back

The purpose of the line of best fit is to make predictions about one variable based on the value of another variable.

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What is interpolation in the context of a line of best fit?

Back

Interpolation is estimating a value within the range of the data points using the line of best fit.

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What is extrapolation in the context of a line of best fit?

Back

Extrapolation is estimating a value outside the range of the data points using the line of best fit.

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How do you find the expected value using a line of best fit?

Back

To find the expected value, substitute the known value into the equation of the line of best fit.

Front

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

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.