This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Correlation Coefficient Coefficient Of Determination – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Correlation Coefficient Coefficient Of Determination Quiz 1 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Residuals are . . . A) Possible models not explored by the researcher. B) Variation in the response variable that is explained by the model. C) The difference between the observed response and the values predicted by the model. D) Data collected from individuals that is not consistent with the rest of the group. Show Answer Correct Answer: C) The difference between the observed response and the values predicted by the model. 2. This measures how strong or weak the relationship between 2 quantitative variables are. A) Correlation. B) Scatter Plot. C) Causation. D) Line of best fit. Show Answer Correct Answer: A) Correlation. 3. Which of these variables could we use Pearson's correlation to measure the relationship? A) Height and weight. B) Eye colour and hair colour. C) Gender and choice of casual attire. D) Political party and opinion about the economy. Show Answer Correct Answer: A) Height and weight. 4. What is the ratio of the Explained Variation to the Total Variation? A) Correlation Coefficient. B) Slope. C) Coefficient of Determination. D) Intercept. Show Answer Correct Answer: C) Coefficient of Determination. 5. In regression analysis, R2 is also called the A) Residual. B) Coefficient of correlation. C) Coefficient of determination. D) Standard error of the estimate. Show Answer Correct Answer: C) Coefficient of determination. 6. If the correlation coefficient is 0.8, what percentage of variation in the response variable (y) is explained by the variation in the explanatory variable (x)? A) 0.64%. B) 64%. C) 0.80%. D) 80%. Show Answer Correct Answer: B) 64%. 7. If the correlation coefficient r between blood pressure and weight is 0.7, A) It is a moderate positive relationship. B) 49% of the variation in weight can be explained by the variation in the blood pressure. C) 51% of the variation in weight is due to other factors than the blood pressure. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. The correlation coefficient for a problem was calculated to be 0.36. What is the coefficient of determination? A) -0.6 or +0.6. B) 0.6. C) 0.13. D) 0.36. Show Answer Correct Answer: C) 0.13. 9. Which type of variation can be explained by the relationship between x and y? A) Explained Variation. B) Unexplained Variation. C) Total Variation. D) Correlation Variation. Show Answer Correct Answer: A) Explained Variation. 10. What type of correlation do you think there is between:Time Spent Watching TV & Grades A) No correlation. B) Negative correlation. C) Cannot be determined. D) Positive correlation. Show Answer Correct Answer: B) Negative correlation. 11. The correlation coefficient, r is used to determine A) Y values given values of x. B) X values given values of y. C) The strength and direction of relationship between x and y. D) None of these. Show Answer Correct Answer: C) The strength and direction of relationship between x and y. 12. Which one is NOT appropriate to use to study the association between variables? A) Scatterplot. B) Correlation. C) Regression. D) Pie chart. Show Answer Correct Answer: D) Pie chart. 13. The correlation coefficient A) Is the same as r2. B) Can never be negative. C) Is the square root of coefficient of determination. D) Is the square of coefficient of determination. Show Answer Correct Answer: C) Is the square root of coefficient of determination. 14. The coefficient of correlation A) . is the same as r-square. B) Is the square root of the coefficient of determination. C) Is the square of the coefficient of determination. D) Can never be negative. Show Answer Correct Answer: B) Is the square root of the coefficient of determination. 15. SSE can never be A) Larger than SST. B) Smaller than SS. C) Equal to 1. D) Equal to zero. Show Answer Correct Answer: A) Larger than SST. 16. The ..... ..... measures the strength of the relationship between 2 variables. A) Correlation Coeffiecient. B) Causation. C) Independent Variable. D) None of above. Show Answer Correct Answer: A) Correlation Coeffiecient. 17. Which type of variation is the sum of the Explained and Unexplained Variations? A) Unexplained Variation. B) Correlation Variation. C) Explained Variation. D) Total Variation. Show Answer Correct Answer: D) Total Variation. 18. R = +1 indicates a A) Perfect positive correlation. B) High degree of negative correlation. C) High degree of positive correlation. D) Perfect negative correlation. Show Answer Correct Answer: A) Perfect positive correlation. 19. What does the value, r=-0.89, tell us about the linear relationship of two quantitative variables? A) Weak negative. B) Weak positive. C) Strong negative. D) Strong positive. Show Answer Correct Answer: C) Strong negative. 20. The value of R2 lies between A) -1 and 0. B) -1 and 1. C) 0 and 1. D) None of the above. Show Answer Correct Answer: C) 0 and 1. 21. In regression analysis, what is R2 called? A) Residual. B) Coefficient of correlation. C) Coefficient of determination. D) Standard error of the estimate. Show Answer Correct Answer: C) Coefficient of determination. 22. Coefficient of correlation lies between A) 0 and +1. B) 0 and-1. C) -1 and +1. D) -5 and +5. Show Answer Correct Answer: C) -1 and +1. 23. If the coefficient of determination is 0.81, the correlation of coefficient is A) Could be either +0.9 or-0.9. B) Must be negative. C) 0.6561. D) Must be positive. Show Answer Correct Answer: A) Could be either +0.9 or-0.9. 24. What is a line of best fit used for? A) To make predictions. B) To connect the points. C) To make the graph look pretty. D) To make it look like you know what you are doing. Show Answer Correct Answer: A) To make predictions. 25. The Coefficient of Determination tells us: A) The equation of the line of best fit. B) The answer to the question being asked. C) The percentage of data that is on the Line of Best Fit. D) The number of pickles on your hamburger. Show Answer Correct Answer: C) The percentage of data that is on the Line of Best Fit. 26. If two variables, x and y, have a very strong linear relationship, then A) There is evidence that x causes a change in y. B) There is evidence that y causes a change in x. C) There might not be any causal relationship between x and y. D) None of these alternatives is correct. Show Answer Correct Answer: C) There might not be any causal relationship between x and y. 27. If the correlation coefficient, r =-1.0 A) All the points on the scatterplot must fall exactly on a straight line with a positive slope. B) All the points on the scatterplot must fall exactly on a straight line with a negative slope. C) All the points on the scatterplot must fall exactly on a straight horizontal line. D) All the points on the scatterplot must fall exactly on a straight vertical line. Show Answer Correct Answer: B) All the points on the scatterplot must fall exactly on a straight line with a negative slope. 28. A study compared the number of years of education and a person's annual salary. The Correlation Coefficient of the data was r = 0.913. What is the Coefficient of Determination? A) 0.913. B) 0.834. C) 0.887. D) 0.457. Show Answer Correct Answer: B) 0.834. 29. Correlation analysis is A) Univariate analysis. B) Bivariate analysis. C) Multivariate analysis. D) Both bivariate and multivariate analysis. Show Answer Correct Answer: D) Both bivariate and multivariate analysis. 30. What would be the correlation between study time and test grades? A) Positive. B) Negative. C) None. D) Cannot be determined. Show Answer Correct Answer: A) Positive. Next →Related QuizzesPaper 1 QuizzesUgc Net QuizzesCorrelation Coefficient Coefficient Of Determination Quiz 2Analysis 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