Scatter Plots and Predictions

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What is a scatter plot?

Back

A scatter plot 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 indicate in a scatter plot?

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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 indicate in a scatter plot?

Back

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 scatter plot?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What is a 'Line of Best Fit'?

Back

A 'Line of Best Fit' is a straight line that best represents the data on a scatter plot, showing the general direction of the data points.

Tags

CCSS.8.EE.B.5

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How can you estimate a value using a scatter plot?

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You can estimate a value by locating the corresponding point on the scatter plot and using the 'Line of Best Fit' to predict the outcome.

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What is the purpose of using scatter plots in data analysis?

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Scatter plots are used to visually assess relationships between variables, identify trends, and make predictions.

Tags

CCSS.HSS.ID.B.5

Front

What is the significance of the slope of the 'Line of Best Fit'?

Back

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

How do you determine if a scatter plot has a strong correlation?

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A scatter plot has a strong correlation if the data points are closely clustered around the 'Line of Best Fit'.

Front

What is an example of a positive correlation in real life?

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An example of a positive correlation is the relationship between hours studied and test scores; generally, more study hours lead to higher scores.

Tags

CCSS.HSS.ID.B.5