Scatterplots

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What is a scatterplot?

Back

A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Tags

CCSS.8.SP.A.1

Front

What does the line of best fit represent in a scatterplot?

Back

The line of best fit represents the trend in the data, indicating the general direction of the relationship between the two variables.

Tags

CCSS.8.SP.A.2

Front

What is a positive correlation in a scatterplot?

Back

A positive correlation occurs when an increase in one variable corresponds to an increase in another variable, resulting in an upward slope.

Tags

CCSS.HSS.ID.B.5

Front

What is a negative correlation in a scatterplot?

Back

A negative correlation occurs when an increase in one variable corresponds to a decrease in another variable, resulting in a downward slope.

Tags

CCSS.HSS.ID.B.5

Front

What does no correlation mean in a scatterplot?

Back

No correlation means there is no discernible relationship between the two variables, and the points do not show any clear pattern.

Tags

CCSS.HSS.ID.B.5

Front

How can you identify a positive correlation in a scatterplot?

Back

You can identify a positive correlation if the points tend to rise from left to right.

Tags

CCSS.HSS.ID.B.5

Front

How can you identify a negative correlation in a scatterplot?

Back

You can identify a negative correlation if the points tend to fall from left to right.

Tags

CCSS.HSF-LE.A.1B

Front

What is the purpose of the correlation coefficient?

Back

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

Tags

CCSS.HSS.ID.C.8

Front

What does a correlation coefficient of 0 indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations and can affect the line of best fit and the correlation.

Tags

CCSS.8.SP.A.1