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3 cards from this section. Quick, good the night before a test.
Define correlation in your own words.
Think about how two things change together.
What does it mean if two variables have a positive correlation?
Consider examples like temperature and ice cream sales.
What is the range of Pearson's correlation coefficient?
Remember the extremes of correlation values.
True or False: Correlation implies causation.
Think back to examples of unrelated variables.
You are given the following data points of student study hours and their corresponding test scores: X: 2, 3, 4, 5, 6; Y: 50, 60, 70, 85, 80. Calculate the correlation and discuss your findings.
Make use of the correlation formulas and interpret results contextually.
Consider two variables: the amount of rainfall and umbrella sales. Discuss potential scenarios showing correlation without causation.
Think beyond direct influences to discover underlying factors.
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