Bivariate Data

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What is bivariate data?

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Bivariate data involves two variables and is used to determine the relationship between them.

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CCSS.6.SP.B.5B

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What is a scatter plot?

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A scatter plot is a graphical representation of bivariate data where each point represents an observation with two variables.

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CCSS.8.SP.A.1

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What does a trend line represent in a scatter plot?

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A trend line indicates the general direction or pattern of the data points in a scatter plot.

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CCSS.8.SP.A.2

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What is correlation in the context of bivariate data?

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Correlation measures the strength and direction of the relationship between two variables.

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CCSS.HSS.ID.B.5

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What are the types of correlation?

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The types of correlation include positive correlation, negative correlation, and no correlation.

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CCSS.HSS.ID.C.9

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How can you identify no association in bivariate data?

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No association is identified when the data points do not show any discernible pattern or trend.

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CCSS.HSS.ID.B.5

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What is the purpose of calculating the correlation coefficient?

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The correlation coefficient quantifies the degree of linear relationship between two variables.

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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.

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CCSS.HSS.ID.B.5

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What is the significance of outliers in bivariate data?

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Outliers can significantly affect the correlation and trend line, potentially skewing the results.

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CCSS.8.SP.A.1