Making Predictions and Reading 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.

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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 is a line of best fit?

Back

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

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How can you determine if a line is an accurate line of best fit?

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A line is an accurate line of best fit if it minimizes the distance between itself and all the data points, ideally passing through the center of the data distribution.

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What does 'no correlation' mean in a scatterplot?

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No correlation means that there is no apparent relationship between the two variables; the data points do not show any trend.

Tags

CCSS.HSS.ID.B.5

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How do you make predictions using a scatterplot?

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To make predictions, you can use the line of best fit to estimate the value of one variable based on the value of another.

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What is the significance of the x-axis and y-axis in a scatterplot?

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The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.

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What is an example of a situation that might show a negative correlation?

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An example of a negative correlation is the relationship between the amount of gas in a car and the distance it can travel; as gas decreases, the distance traveled also decreases.

Tags

CCSS.HSS.ID.B.5

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What is an example of a situation that might show a positive correlation?

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An example of a positive correlation is the relationship between hours studied and test scores; as study hours increase, test scores tend to increase.

Tags

CCSS.HSS.ID.B.5