Unit 2 Vocab, Scatter Plots

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9 Terms

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Correlation

A relationship between two variables

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What do we determine if there’s a relationship?

Strength and fit

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What measures the strength and direction of a relationship between variables whose data points lie on or near a line is called

correlation coefficient

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what variable is it represented by

r

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positive correlation

point that are approximated by a line w a positive slope

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negative slope

point that are approximated by a line w a negative slope

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no correlation

points cannot be well approximated into a line

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correlation

number r satisfying -1</= 1, indicating how well a particular set of data can be approximated by a straight line

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Lines that best fit/ Lines of regression

lines through or near points on a scatter plot that determine linear representation