6.07 Flashcard Scatter plots & Best Line of Fit

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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 axis.

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CCSS.8.SP.A.1

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What does a positive correlation in a scatter plot indicate?

Back

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

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CCSS.HSS.ID.B.5

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What does a negative correlation in a scatter plot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

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What is the correlation coefficient?

Back

The correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables, ranging from -1 to 1.

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CCSS.HSS.ID.C.8

Front

What does a correlation coefficient of 1 indicate?

Back

A correlation coefficient of 1 indicates a perfect positive correlation.

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CCSS.HSS.ID.B.5

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What does a correlation coefficient of -1 indicate?

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A correlation coefficient of -1 indicates a perfect negative correlation.

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CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0 indicate?

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A correlation coefficient of 0 indicates no correlation between the variables.

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CCSS.HSS.ID.B.5

Front

How can you identify a strong positive correlation in a scatter plot?

Back

A strong positive correlation is identified by data points that are closely clustered around a line that slopes upwards from left to right.

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CCSS.HSS.ID.B.5

Front

How can you identify a strong negative correlation in a scatter plot?

Back

A strong negative correlation is identified by data points that are closely clustered around a line that slopes downwards from left to right.

Tags

CCSS.HSS.ID.B.5

Front

What is the best line of fit?

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The best line of 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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CCSS.8.EE.B.5