Scatterplots - Do Now Friday_Dec 6

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What is a scatterplot?

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A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

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CCSS.8.SP.A.1

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How do you interpret a scatterplot?

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To interpret a scatterplot, look for patterns, trends, and correlations between the two variables represented.

Tags

CCSS.8.SP.A.1

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What does a positive correlation in a scatterplot indicate?

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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?

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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 it mean if a scatterplot shows no correlation?

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

Tags

CCSS.HSS.ID.B.5

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What is the purpose of making predictions using a scatterplot?

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The purpose is to estimate the value of one variable based on the known value of another variable using the trend shown in the scatterplot.

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What is a weak correlation?

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A weak correlation means that the relationship between the two variables is not strong, and the data points are widely scattered.

Tags

CCSS.HSS.ID.B.5

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What is a strong correlation?

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A strong correlation means that the relationship between the two variables is clear, and the data points are closely clustered along a line.

Tags

CCSS.HSS.ID.B.5

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How can you identify the type of correlation in a scatterplot?

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You can identify the type of correlation by observing the direction and tightness of the data points: upward slope for positive, downward slope for negative, and scattered for no correlation.

Tags

CCSS.HSS.ID.B.5

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What is the significance of outliers in a scatterplot?

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Outliers are data points that fall far from the trend of the rest of the data; they can significantly affect the correlation and predictions.