Analyzing Bivariate Data Review

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What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

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What does a trend line represent in a scatter plot?

Back

A trend line represents the general direction that a group of points seem to be heading, indicating the relationship between the variables.

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How can you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another by finding the corresponding point on the line.

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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, minimizing the distance between the line and all data points.

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What does it mean if a scatter plot shows a linear relationship?

Back

A linear relationship means that as one variable increases or decreases, the other variable tends to increase or decrease in a consistent manner.

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What is correlation in statistics?

Back

Correlation measures the strength and direction of a linear relationship between two variables.

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What are the types of correlation?

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The types of correlation are positive correlation, negative correlation, and no correlation.

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What does a positive correlation indicate?

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

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What does a negative correlation indicate?

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