Line of Best Fit

Front

What is the line of best fit?

Back

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

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

Back

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

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

Back

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

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

Back

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

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What is an outlier in a data set?

Back

An outlier is a data point that differs significantly from other observations in the data set, often appearing far away from the trend.

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How do you identify an outlier on 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 on the scatter plot.

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What is correlation in statistics?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What is the difference between positive and negative correlation?

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Positive correlation means both variables increase together, while negative correlation means one variable increases as the other decreases.

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What does 'no correlation' mean?

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No correlation means there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

What is the purpose of the line of best fit?

Back

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