Scatterplots

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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 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?

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

Tags

CCSS.HSS.ID.B.5

Front

How can you identify the trend in a scatterplot?

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You can identify the trend by observing the direction of the data points; if they rise together, it's positive; if one rises while the other falls, it's negative.

Tags

CCSS.HSF-LE.A.1B

Front

What is a trend line in a scatterplot?

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A trend line is a straight line that best represents the data points in a scatterplot, showing the general direction of the data.

Tags

CCSS.8.SP.A.2

Front

How do you use a trend line to make predictions?

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You can extend the trend line to estimate values for one variable based on known values of the other variable.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually represent relationships between two variables, making it easier to identify patterns, trends, and correlations.

Tags

CCSS.8.SP.A.1

Front

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 watching TV and grades; more TV time often leads to lower grades.

Tags

CCSS.HSS.ID.B.5