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 and can be used to make predictions.

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What does an outlier represent in a data set?

Back

An outlier is a data point that differs significantly from other observations. It may indicate variability in the measurement or may suggest a different underlying process.

Front

How do you identify an outlier in a scatter plot?

Back

An outlier can be identified as a point that lies far away from the other points in the scatter plot, often appearing isolated from the main cluster of data.

Front

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

Back

Front

What does a negative slope indicate about the relationship between two variables?

Back

A negative slope indicates an inverse relationship between the two variables, meaning that as one variable increases, the other decreases.

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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 summarize the relationship between variables, allowing for predictions and insights based on the data.

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How can you determine the equation of the line of best fit?

Back

The equation of the line of best fit can be determined using statistical methods such as least squares regression, which minimizes the distance between the data points and the line.

Front

What does it mean if a graph has a positive association?

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A positive association means that as one variable increases, the other variable also tends to increase, resulting in a positive slope.

Front

What is the significance of the y-intercept in a linear equation?

Back

Front

What is the difference between correlation and causation?

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Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.