Scatterplot review

Front

What is a scatterplot?

Back

A scatterplot is a type of graph that displays values for typically two variables for a set of data. Each point on the graph represents an observation.

Tags

CCSS.8.SP.A.1

Front

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

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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 no correlation mean 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 a trend line in a scatterplot?

Back

A trend line is used to show the general direction of the data points and can help identify the type of correlation.

Tags

CCSS.8.SP.A.2

Front

How can you determine the strength of a correlation from a scatterplot?

Back

The strength of a correlation can be determined by how closely the data points cluster around the trend line; tighter clusters indicate stronger correlations.

Tags

CCSS.HSS.ID.B.5

Front

What is the difference between linear and non-linear relationships in scatterplots?

Back

A linear relationship can be represented by a straight line, while a non-linear relationship cannot and may curve or change direction.

Tags

CCSS.8.F.A.3

Front

What does it mean if a scatterplot shows a weak correlation?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What is an inverse-square relationship?

Back

An inverse-square relationship is a type of relationship where one variable decreases as the square of the other variable increases, often seen in physics.

Tags

CCSS.8.EE.B.5

Front

How can outliers affect a scatterplot?

Back

Outliers can skew the results and may misrepresent the correlation by pulling the trend line away from the majority of the data points.

Tags

CCSS.8.SP.A.1