Scatter Plots and Trend Lines

Front

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

Front

What does a positive relationship in a scatter plot indicate?

Back

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

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CCSS.HSF.LE.B.5

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What does a negative relationship in a scatter plot indicate?

Back

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

Tags

CCSS.HSF.LE.B.5

Front

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, showing the overall trend of the data.

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CCSS.8.EE.B.5

Front

What does correlation refer to in statistics?

Back

Correlation refers to the strength and direction of a relationship between two variables.

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CCSS.HSS.ID.C.9

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What is a strong positive correlation?

Back

A strong positive correlation means that the data points are closely clustered around a line that slopes upwards, indicating a strong relationship where both variables increase together.

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CCSS.HSS.ID.B.5

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What is a strong negative correlation?

Back

A strong negative correlation means that the data points are closely clustered around a line that slopes downwards, indicating a strong relationship where one variable increases while the other decreases.

Tags

CCSS.HSS.ID.B.5

Front

What is a weak correlation?

Back

A weak correlation means that the data points are more spread out and do not closely follow a trend line, indicating a weak relationship between the variables.

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CCSS.HSS.ID.B.5

Front

What is linear association?

Back

Linear association is a relationship between two variables where the data points can be closely approximated by a straight line.

Tags

CCSS.8.F.A.3

Front

What does it mean if there is no association between two variables?

Back

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