Scatterplots and LOBF Review

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What is a scatterplot?

Back

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

Tags

CCSS.8.SP.A.1

Front

What does a negative correlation in a scatterplot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

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What does a positive correlation in a scatterplot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What is the line of best fit (LOBF)?

Back

The line of best fit is a straight line that best represents the data on a scatterplot, showing the overall trend of the data.

Tags

CCSS.8.EE.B.5

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How can you use the line of best fit to make predictions?

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

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What does it mean if there is no correlation in a scatterplot?

Back

No correlation means that there is no apparent relationship between the two variables; changes in one variable do not predict changes in the other.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of analyzing scatterplots?

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Analyzing scatterplots helps to identify relationships, trends, and patterns between two variables.

Tags

CCSS.HSS.ID.B.5

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How do you determine the type of correlation from a scatterplot?

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You determine the type of correlation by observing the direction of the data points: upward for positive, downward for negative, and scattered for no correlation.

Tags

CCSS.HSS.ID.B.5

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What is an example of a positive correlation?

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An example of a positive correlation is the relationship between hours studied and test scores; generally, more study hours lead to higher scores.

Tags

CCSS.HSS.ID.B.5

Front

What is an example of a negative correlation?

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An example of a negative correlation is the relationship between the amount of time spent on social media and academic performance; more time on social media may lead to lower grades.

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CCSS.HSS.ID.C.9