This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Correlation Coefficient Coefficient Of Determination – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Correlation Coefficient Coefficient Of Determination Quiz 2 (12 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The correlation between two variables is r=0.5. Which statement is true? A) Average values of y changes by 0.5 when x is increased by 1. B) Average values of x changes by 0.5 when y is increased by 1. C) X explains 25% of the variation in y. D) Y explains 25% of the variation in x. Show Answer Correct Answer: C) X explains 25% of the variation in y. 2. The coefficient of correlation for a problem was calculated to be 0.36. The coefficient of determination for this would be A) 0.13. B) 0.6. C) -0.6 or +0.6. D) 0.36. Show Answer Correct Answer: A) 0.13. 3. The Coefficient of Determination is A) R squared. B) R. C) R times the standard deviation of y over the standard deviation of x. D) A + bx. Show Answer Correct Answer: A) R squared. 4. If there is a strong correlation, the value of r must be A) Any value larger than 1. B) Closer to-1 if the correlation is negative. C) Closer to 0 if the correlation is positive. D) None of these. Show Answer Correct Answer: B) Closer to-1 if the correlation is negative. 5. The correlation coefficient, r, is always between ..... and ..... A) 0 and 1. B) -1 and 1. C) -1 and 0. D) None of above. Show Answer Correct Answer: B) -1 and 1. 6. If the coefficient of determination is equal to 1, then the correlation coefficient A) Can be either-1 or +1. B) Must also be equal to 1. C) Must be-1. D) Can be any value between-1 to +1. Show Answer Correct Answer: A) Can be either-1 or +1. 7. If the correlation coefficient is 0.8, the percentage of variation in the response variable explained by the variation in the explanatory variable is A) 0.80%. B) 80%. C) 64%. D) 0.64%. Show Answer Correct Answer: C) 64%. 8. If the coefficient of determination is 0.876, what percent of the variation is explained? A) 92%. B) -67%. C) 88%. D) 56%. Show Answer Correct Answer: C) 88%. 9. If $ r=.750$, find the Coefficient of Determination. A) $ .563$. B) $ .750$. C) $ .866$. D) $ .250$. Show Answer Correct Answer: A) $ .563$. 10. The correlation between two variables is r=0.5. Which of the statement is correct? A) Average values of y changes by 0.5 when x is increased by 1. B) Average values of x changes by 0.5 when y is increased by 1. C) Y explains 25% of the variation in x. D) X explains 25% of the variation in y. Show Answer Correct Answer: D) X explains 25% of the variation in y. 11. Which type of variation cannot be explained by the relationship between x and y and is due to other factors? A) Total Variation. B) Explained Variation. C) Correlation Variation. D) Unexplained Variation. Show Answer Correct Answer: D) Unexplained Variation. 12. Two variables have a positive association when A) The value of one variable tends to increase as the other variable increases. B) The value of one variable tends to increase as the other variable decreases. C) The value of one variable tends to increase regardless how the other variable change. D) The values of both variables are always positive. Show Answer Correct Answer: A) The value of one variable tends to increase as the other variable increases. ← PreviousRelated QuizzesPaper 1 QuizzesUgc Net QuizzesCorrelation Coefficient Coefficient Of Determination Quiz 1Analysis Of Variance QuizChi Square QuizCoefficient Of Variation Discrete Serious And Continuous Serious QuizConcept Of Point And Interval Estimation QuizConcept Of Sampling And Other Concepts Related To Sampling QuizConfidence Intervals QuizDecision Making With Hypothesis Testing Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books