Practice - Correlation and Regression
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Practice Questions
Test your understanding with targeted questions
What is correlation?
💡 Hint: Think about how two things can go up or down together.
What range does the correlation coefficient fall into?
💡 Hint: What are the extremes of these values?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does a correlation coefficient of -0.5 indicate?
💡 Hint: Remember what the sign of the correlation coefficient indicates.
True or False: A regression model can only predict outcomes for the data used to create it.
💡 Hint: Consider the limitations of models.
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Challenge Problems
Push your limits with advanced challenges
Using a dataset of ice cream sales and temperature records over a summer, derive a regression equation to predict ice cream sales based on temperature. Test your model's predictions with new temperature data.
💡 Hint: Use software or a graphing calculator for regression analysis.
You are analyzing two variables: the amount of regular exercise and cholesterol levels in a sample. Find the correlation and discuss what this might imply about their relationship.
💡 Hint: Consider health advice and statistics on exercise effects on health.
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Reference links
Supplementary resources to enhance your learning experience.