6.3.5.1 - Case 1: Given Ranks
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Practice Questions
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Define correlation in your own words.
💡 Hint: Think about how two things change together.
What does it mean if two variables have a positive correlation?
💡 Hint: Consider examples like temperature and ice cream sales.
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Interactive Quizzes
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What is the range of Pearson's correlation coefficient?
💡 Hint: Remember the extremes of correlation values.
True or False: Correlation implies causation.
💡 Hint: Think back to examples of unrelated variables.
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Challenge Problems
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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.
💡 Hint: 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.
💡 Hint: Think beyond direct influences to discover underlying factors.
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