TEKS 8.5D

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What is a scatterplot?

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A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

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CCSS.8.SP.A.1

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How can you use a scatterplot to make predictions?

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You can use a scatterplot to make predictions by identifying trends or patterns in the data points and estimating values based on those trends.

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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 is the purpose of using data in a scatterplot?

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The purpose is to visually analyze the relationship between two quantitative variables and to identify any trends or patterns.

Tags

CCSS.8.SP.A.1

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What is interpolation in the context of scatterplots?

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Interpolation is the process of estimating unknown values within the range of known data points in a scatterplot.

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CCSS.HSS.ID.B.6A

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What is extrapolation in the context of scatterplots?

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Extrapolation is the process of estimating unknown values outside the range of known data points in a scatterplot.

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CCSS.8.SP.A.3

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How do you determine the best fit line in a scatterplot?

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The best fit line is determined by minimizing the distance between the line and all the data points, often using linear regression.

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CCSS.8.EE.B.5

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What is the significance of outliers in a scatterplot?

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Outliers are data points that differ significantly from other observations and can affect the overall trend and predictions.

Tags

CCSS.8.SP.A.1

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What is the formula for calculating the slope of a line in a scatterplot?

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The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1) for two points (x1, y1) and (x2, y2).

Tags

CCSS.8.EE.B.5