Scatter Plots

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What is a scatter plot?

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A scatter plot is a graphical representation of two variables where each point represents an observation in the dataset, showing the relationship between the variables.

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CCSS.8.SP.A.1

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What does a correlation coefficient indicate?

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A correlation coefficient indicates the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

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CCSS.HSS.ID.C.8

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What does a correlation of -1 signify?

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A correlation of -1 signifies a perfect negative linear relationship between two variables.

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CCSS.HSS.ID.B.5

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What does a correlation of 1 signify?

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A correlation of 1 signifies a perfect positive linear relationship between two variables.

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CCSS.HSS.ID.B.5

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What does a correlation of 0 signify?

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A correlation of 0 signifies no linear relationship between the two variables.

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CCSS.HSS.ID.B.5

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What type of correlation is indicated by a downward slope in a scatter plot?

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A downward slope in a scatter plot indicates a negative correlation.

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CCSS.HSF-LE.A.1B

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What type of correlation is indicated by an upward slope in a scatter plot?

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An upward slope in a scatter plot indicates a positive correlation.

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CCSS.HSS.ID.B.5

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How can you determine the strength of a correlation from a scatter plot?

Back

The strength of a correlation can be determined by how closely the points cluster around a line; tighter clustering indicates a stronger correlation.

Tags

CCSS.HSS.ID.B.5

Front

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

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Scatter plots are used to visually assess the relationship between two quantitative variables and to identify trends, patterns, or outliers.

Tags

CCSS.8.SP.A.1

Front

What does it mean if a scatter plot shows no discernible pattern?

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If a scatter plot shows no discernible pattern, it suggests that there is no correlation or relationship between the two variables.

Tags

CCSS.HSS.ID.B.5