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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define independent variable.
💡 Hint: Think about what you manipulate or measure in an experiment.
Question 2
Easy
What is the regression line of y on x?
💡 Hint: Recall the role of predictor and outcome.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the independent variable?
- The cause
- The effect
- Neither
💡 Hint: Identify what you control in an experiment.
Question 2
True or False: The regression line of y on x is the same as the regression line of x on y when correlation is perfect.
- True
- False
💡 Hint: Think about perfect correlation.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the data for the number of hours studied and corresponding scores, find the regression line of y on x and use it to predict y when x = 10 hours.
💡 Hint: Make sure to compute each step carefully!
Question 2
Explain how a change in the correlation coefficient affects the slope of the regression line.
💡 Hint: Consider how strong relationships influence predictions.
Challenge and get performance evaluation