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

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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.

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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 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 variable do not predict changes in the other.

Tags

CCSS.HSS.ID.B.5

Front

What is a line of best fit?

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

Tags

CCSS.8.EE.B.5

Front

How can you estimate values using a line of best fit?

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You can estimate values by finding the corresponding y-value on the line of best fit for a given x-value.

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CCSS.HSF.IF.A.2

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What is the purpose of using scatterplots in data analysis?

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Scatterplots are used to visually assess relationships between variables, identify trends, and detect outliers.

Tags

CCSS.8.SP.A.1

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What is an outlier in a scatterplot?

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An outlier is a data point that significantly differs from other observations in the dataset, potentially indicating an anomaly.

Tags

CCSS.8.SP.A.1

Front

How do you interpret the slope of the line of best fit?

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The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.

Tags

CCSS.8.EE.B.5

Front

What is the x-axis in a scatterplot?

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The x-axis is the horizontal axis that typically represents the independent variable.