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3 cards from this section. Quick, good the night before a test.
What is the range of values for the correlation coefficient?
Think of the emotional extremes of relationships!
What does a correlation coefficient of 0 indicate?
Consider what 'zero' means in a relationship.
What does a correlation coefficient of 1 indicate?
Think of the perfect team that always wins together.
If the correlation coefficient is 0, what does it mean?
What’s the opposite of a team working together?
You collect data on the number of hours students study and their corresponding test scores. After calculating the correlation coefficient, you find it to be 0.85. Discuss what this implies about the relationship and any potential causation.
Reflect on other variables that might also affect test performance.
In an experiment, you found a negative correlation (-0.78) between excessive screen time and physical activity levels in teenagers. Summarize the potential implications of this finding.
Consider what recommendations could help in changing habits.
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