Scatterplots

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What is a scatterplot?

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

Tags

CCSS.8.SP.A.1

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What does a 'Line of Best Fit' represent in a scatterplot?

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A 'Line of Best Fit' is a straight line that best represents the data on a scatterplot, showing the trend of the data points.

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CCSS.8.SP.A.2

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What does it mean if a scatterplot shows no relationship?

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It means that there is no discernible pattern or correlation between the two variables being plotted.

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CCSS.HSS.ID.B.5

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What is a positive linear association in a scatterplot?

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A positive linear association occurs when an increase in one variable corresponds to an increase in the other variable, resulting in an upward trend.

Tags

CCSS.HSS.ID.B.5

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What is a negative linear association in a scatterplot?

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A negative linear association occurs when an increase in one variable corresponds to a decrease in the other variable, resulting in a downward trend.

Tags

CCSS.HSS.ID.B.5

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What does a non-linear association look like in a scatterplot?

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A non-linear association is when the relationship between the variables does not follow a straight line, indicating a more complex relationship.

Tags

CCSS.8.F.A.3

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How can you estimate values from a scatterplot?

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You can estimate values by locating the corresponding point on the scatterplot and reading the value from the axes.

Tags

CCSS.8.SP.A.1

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What is the purpose of making predictions using a scatterplot?

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The purpose is to use the observed data to forecast future values or trends based on the established relationship between the variables.

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What does it mean if a scatterplot has outliers?

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Outliers are data points that fall far away from the other points in the scatterplot, which can indicate variability in the data or errors in measurement.

Tags

CCSS.8.SP.A.1

Front

How do you identify the strength of a relationship in a scatterplot?

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The strength of a relationship can be identified by how closely the data points cluster around the 'Line of Best Fit'; closer points indicate a stronger relationship.