Scatter Plots Correlations

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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, allowing for the visualization of relationships or correlations between the variables.

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CCSS.8.SP.A.1

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What does correlation indicate in a scatter plot?

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Correlation indicates the strength and direction of a linear relationship between two variables. It can be positive, negative, or zero.

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CCSS.HSS.ID.B.5

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What is a positive correlation?

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A positive correlation occurs when an increase in one variable corresponds to an increase in another variable, resulting in an upward slope in the scatter plot.

Tags

CCSS.HSS.ID.B.5

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What is a negative correlation?

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A negative correlation occurs when an increase in one variable corresponds to a decrease in another variable, resulting in a downward slope in the scatter plot.

Tags

CCSS.HSS.ID.B.5

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What does it mean if there is no correlation between two variables?

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If there is no correlation, it means that changes in one variable do not predict changes in the other variable, and the scatter plot will show a random distribution of points.

Tags

CCSS.HSS.ID.B.5

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How can you determine the strength of a correlation?

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The strength of a correlation can be determined by how closely the points in a scatter plot cluster around a line. A tighter cluster indicates a stronger correlation.

Tags

CCSS.HSS.ID.B.5

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What is the purpose of using a scatter plot?

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The purpose of using a scatter plot is to visually assess the relationship between two quantitative variables and to identify patterns, trends, or outliers.

Tags

CCSS.8.SP.A.1

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What is the correlation coefficient?

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The correlation coefficient is a numerical measure that quantifies 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 coefficient of 1 indicate?

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A correlation coefficient of 1 indicates 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 coefficient of -1 indicate?

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

Tags

CCSS.HSS.ID.B.5