Lines of Best Fit - 8th Grade

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the general direction of the data points.

Tags

CCSS.8.SP.A.2

Front

TRUE OR FALSE: A line of best fit must go through the origin.

Back

False

Tags

CCSS.8.EE.B.5

Front

What does a positive association in a scatter plot indicate?

Back

As one variable increases, the other variable also increases.

Tags

CCSS.HSF-LE.A.1B

Front

What does a negative association in a scatter plot indicate?

Back

As one variable increases, the other variable decreases.

Tags

CCSS.HSF-LE.A.1B

Front

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

Back

Changes in one variable do not affect the other variable.

Front

How can you determine the strength of an association in a scatter plot?

Back

By observing how closely the data points cluster around the line of best fit.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of a line of best fit?

Back

To summarize the relationship between two variables and make predictions.

Tags

CCSS.8.SP.A.2

Front

What type of relationship is indicated if the line of best fit slopes upwards?

Back

A positive relationship.

Tags

CCSS.8.SP.A.2

Front

What type of relationship is indicated if the line of best fit slopes downwards?

Back

A negative relationship.

Tags

CCSS.8.EE.B.5

Front

What does a strong association look like on a scatter plot?

Back

Data points are closely clustered around the line of best fit.

Tags

CCSS.HSS.ID.B.5