d) n-2 since the slope and the intercept are estimated from sample data If you are one of those who missed out on this skill test, here are the questions and solutions. b) 90% of the variation in y can be explained by the regression line The number of degrees of freedom associated with the standard error of estimate is Can’t find the question you are looking for? Which of the following t-table values listed below would be used? 38. © 2012-2021 MindCoral Inc. All Rights Reserved. 53. 17. © BrainMass Inc. brainmass.com October 2, 2020, 5:25 am ad1c9bdddf, Linear Regression Multiple Choice Questions, Multiple Choice Questions on Regression Analysis, Multiple choice question on rergerssion analysis, 30 Multiple Choice Problems in Statistics, Statistics Multiple Choice Question and Answer, Multiple choice questions on hypothesis testing,regression. These short objective type questions with answers are very important for Board exams as well as competitive exams. This implies that if advertising is $800, then the predicted amount of sales (in dollars) is: This assumption of equal standard deviations about the regression line is called: 49. For a given data set of (x,y) values, an infinite number of possible regression equations can be fitted to the corresponding scatter diagram, and each equation will have a unique combination of values for the y-intercept b0 and the slope b1. a) is a value of the dependent variable and is a value of the independent variable c) is the slope of the regression line This implies that if the height is increased by 1 inch, the weight is expected to: d) pooled variances c) predicted value of y for a given value of x Correlation analysis is used to determine the: strength of the relationship between x and y. least squares estimates of the regression parameters. d) must be 0 If the coefficient of correlation r is positive, then the dependent variable and the independent variable x are said to be ____________________ related. Logistic regression is used when you want to: Answer choices. 7. 8. Correlation analysis is used to determine the: a) 2916 [Skip Breadcrumb Navigation]: [Skip Breadcrumb Navigation] Home: Chapter 12 : No Frames Version Simple Linear Regression. Question 3 Answer questions 3 - 9 from the following problem statement. Chapter 15 - Multiple choice quiz. a) random error b) coefficient of correlation is 0 ... Logistic regression assumes a: Answer choices. d) increase of $1 in advertising is expected to result in an increase of $5,000 in sales When the predicted values of y and the actual values of y are the same, the standard error of estimate will be 0.0. When you have completed all the questions and reviewed your answers, press the button below to grade the test. 37. d) pooled variances 19. c) 0.28 a) 10 b) +0.88 Multiple Choice Quiz. c) n-1 since only the predicted value of y is estimated from sample data Answer choice B was an exponential regression results. a) confidence interval a) 0.95 In a statistics course, a linear regression equation was computed to predict the final-exam score from the score on the first test. b) is the y-intercept of the regression line That indicates that the: Choose the options that are correct regarding machine learning (ML) and arti cial intelligence (AI), (A) ML is an alternate way of programming intelligent machines. d) nominal or ratio {Real Estate Builder Narrative} When the builder used a simple linear regression model with house size as the dependent variable and education as the independent variable,he obtained an R-square value of 23.0%.What additional percentage of the total variation in house size has been explained by including family size and income in the multiple regression? d) 90% of the variation in x can be explained by regression line Multiple choice questions on Correlation and Regression. 11. These short solved questions or quizzes are provided by Gkseries. 6. 14. The simple linear regression model assumes that regardless of the value for x, the standard deviation of the distribution of y values about the regression line is the same. Based on the above estimated regression equation, if price is increased by 2 units, then demand is expected to. a) coefficient of correlation is -1 d) 2.571 Hopefully, you must have understood the above mentioned Linear Regression Interview Questions thoroughly. 1. d) nominal or ratio However, only one equation will be the "best fit" as defined by the least-squares criterion. Answer choice C is the linear regression results. A regression analysis between sales (in $1000) and advertising (in $100) resulted in the following least squares line: yhat = 75 +6x. 13. e) nominal or interval 22. What … b) least squares estimates of the regression parameters a) ŷ = b 0 + b 1 x + b 2 x 2. b ... a) Leptokracy b) Homoscedacity c) Heteroscedacity d) Covariance Question 5 Residual plot in regression analysis is used to mean. c) a coefficient of correlation of 0 Predict a dichotomous variable from continuous or dichotomous variables. a) increase of $1 in advertising is expected to result in an increase of $5 in sales You missed on the real time test, but can read this article to find out how many could have answered correctly. b) a coefficient of determination equal to -1 a) The coefficient of correlation is 0.9 The variation explained by regression line is denoted by ____________________, while the variation not explained by regression line is denoted by ____________________. 15. An indication of no linear relationship between two variables would be: a coefficient of determination equal to 1. a coefficient of determination equal to -1. a coefficient of correlation equal to -1. Which of the following table values would be appropriate for a 95% confidence interval for the mean of y from a simple linear regression problem if the sample size is 7? a) regression coefficient This implies that an: Which of the following t-table values listed below would be used? 4. ... A biologist assumes that there is a linear relationship between the amount of fertilizer supplied to ... Use your regression equation to estimate the amount Karen collected. c) coefficient of correlation is 1 c) actual value of y and the estimated value of x Multiple Choice Quizzes Take the quiz test your understanding of the key concepts covered in the chapter. The coefficient of determination is a number that indicates both the direction and the strength of the linear relationship between the dependent and independent variable. c) increase by 5 pounds 54. Multiple Choice; Site Navigation; Navigation for Multiple Regr Answer choice D are the values from the quadratic regression but in reverse. a) $4875 An instructor gives the same y vs xdata as given below to four students. In regression and correlation analysis, if SSE and SST are known, then with this information the, coefficient of determination can be computed. d) decrease by 24 pounds Simple linear regression requires that the scales of measurement be expressed in either: 25. In order to estimate with 95% confidence the expected value of y in a simple linear regression problem, a random sample of 10 observations is taken. In multiple regression with p predictor variables, when constructing a confidence interval for any β i, the degrees of freedom for the tabulated value of t should be: b) heteroscedasticity e) standard error of estimate A regression analysis between sales (in $1000) and advertising (in $) resulted in the following least squares line: yhat = 80,000 + 5x. If the standard error of estimate 5xy = 18 and n = 10, then the error sum of squares, SSE, is: If the coefficient of correlation is either ____________________ or ____________________, then the regression line will actually include all of the data points and the line will be a perfect fit. d) 1.3 b) -1.0 Here is the leaderbo… Regressing a dependent variable on this independent variable will result in a coefficient of determination (r 2 ) of: c) 0.9 b) residual All of the values of an independent variable equal the same number. 50. Why is my evil lecturer forcing me to learn statistics? An indication of no linear relationship between two variables would be: For a given value of x, the estimation interval for an individual y observation is called the: A regression analysis between sales (in $1000) and advertising (in $100) resulted in the following least squares line: y hat = 75 +6x. e) residual analysis A regression analysis between sales (in $1000) and advertising (in $) resulted in the following least squares line: yhat = 80,000 + 5x. 4. We can measure the proportion of the variation explained by the regression model by: a) r b) R. 2c) σ d) F. 3. Multiple Choice; Site Navigation; Navigation for Simple L Correlation analysis provides us with two important measures of the strength: (1) the coefficient of ____________________ and (2) the coefficient of ____________________. e) Both "A" and "B" are correct 52. And it is highly likely that you also see several multiple choice questions about the same. c) prediction interval We have seen the importance of linear regression through some interview questions on linear regression. This Section contains Multiple Choice Questions (MCQs) about Correlation Analysis, Simple Regression Analysis, Multiple Regression Analysis, Coefficient of Determination (Explained Variation), Unexplained Variation, Model Selection Criteria, Model Assumptions, Interpretation of results, Intercept, Slope, Partial Correlation, Significance tests, OLS Assumptions, Multicollinearity, Heteroscedasticity, … b) 15 The equation was ŷ = 10 + 0.9x where ŷ is the final-exam score and x is the score on the first test. TRUE OR FALSE: b) $123,000 32. The main drawback of using multiple regression over simple regression is: A.) d) a coefficient of correlation equal to -1 The correct model is. d) decrease by 24 pounds We segregated the Linear Regression Interview Questions on the basis of fundamental, complex and multiple-choice questions. These short objective type questions with answers are very important for Board exams as well as competitive exams. The least-squares criterion requires that the sum of the squared deviations between the y values in the scatter diagram and the y values predicted by the equation be minimized. In a multiple regression when there are correlations between predictor variables, this problem is known as: A. mean square due to error ? Statistics 1 – Correlation and Regression Exam Questions . This means that the coefficient of determination (r^2) must equal: Which of the following statements is true regarding the simple linear regression model y sub i = beta sub 0 + beta sub 1 * x sub i + epsilon sub i: y sub i is a value of the dependent variable (y) and x sub i is a value of the independent variable (x). c) 2.3 beta sub 1 is the slope of the regression line. Once you have completed the test, click on 'Submit Answers' to get your results. c) y-intercept The coefficient of determination can be described in terms of the total variation in y versus the unexplained variation in y. 57. A specific value of the y-variable given a specific value of the x-variable b. 23. 16. An instructor wants to show the students that there is a linear correlation between the number of hours they spent watching TV during a certain weekend and their scores on a test taken the following Monday. e) The coefficient of determination is 0.81 b) increase $5 in advertising is expected to result in an increase of $5,000 in sales Chapter Specific Resources . Word Processor Format (.rtf) a) must have the same numerical value The symbol for the independent variable is ____________________ and the symbol for the dependent variable is ____________________. Linear Regression is still the most prominently used statistical technique in data science industry and in academia to explain relationships between features. Rating: A 176 Answered. 1 Multiple-Choice/Numerical Questions 1. The coefficient of determination is 0.81. a) random error Which of the following statistical tests allows causal inferences to be made? In a simple linear regression model, the residual is the horizontal distance from the regression line to an observed data point. Linear Regression Multiple Choice Questions Multiple Choice Questions on Regression Analysis Multiple choice question on rergerssion analysis 30 Multiple Choice Problems in Statistics Statistics Multiple Choice Question and Answer Multiple choice questions on hypothesis testing,regression Questions of Algebra dealing with probability, etc. 35. 9. d) pooled variances Linear regression multiple choice questions. In a linear regression problem, we are using “R-squared” to measure goodness-of-fit. e) residual analysis e) residual analysis d) -0.64 b) decrease by 1 pound Multiple Choice. e) t-ratio Full key provided. c) interval or ratio Correlation and Regression Multiple Choice Questions and Answers for competitive exams. The total sum of squares (SST) is at least 60. (B) ML and AI have very di erent goals. The value for SSE equals zero. 40. The value for SSE equals zero. b) heteroscedasticity e) 1.0 e) 0.00 b) ordinal or ratio A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: yhat = 120 + 5x. The residual is defined as the difference between the: A quadratic regression produced the strongest correlation coefficient and coefficient of determination. 2. b) -0.8 c) $487,500 10. If the sum of squares due to regression (SSR) is 60, which of the following must be true? d) 0.00 a) 90% of the y values are positive c) increase of $1 in advertising is expected to result in an increase of $80,005 in sales The Linear Model (Regression) » Multiple choice questions. These short solved questions or quizzes are provided by Gkseries. multiple estimates usually have a higher variance than simple estimates C.) multiple estimates are more susceptible to bias than simple estimates D.) both A … A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: yhat = 120 + 5x. 56. This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here! e) 1.960 b) actual value of x and the estimated value of x 21. c) +0.90 An ANOVA test based on SST and SSR is equivalent to t-test for the coefficient of correlation and the slope. c) interval or ratio The identification problem refers to the difficulties that a researcher encounters when trying to. The assumption of equal standard deviations about the regression line is called _________________________. The coefficient of determination can take on values between ____________________ and ____________________, inclusive. ____________________ provides a "best-fit" mathematical equation for the values of two variables, x and y. 42. It was specially designed for you to test your knowledge on linear regression techniques. There are 3 major areas of questions that the multiple linear regression analysis answers – (1) causal analysis, (2) forecasting an effect, (3) trend forecasting. y=60x-1200 y=30x-200 y=-139.43+29.684x y=1+22.782x d) 22 Multiple choice questions. In a regression problem, if the coefficient of determination is 0.90, this means that: d) may have opposite signs or the same sign 47. This means that the coefficient of determination (r 2 ) must equal: The residual sum of squares will be: The vertical spread of the data points about the regression line is measured by the: The solution gives detailed answers on 20 statistical multiple choice questions including the topics of regression analysis. Which one would appear to be incorrect? d) coefficient of determination is between -1 and 1 43. For the values of the coefficient of determination listed below, which one implies the greatest value of SSR (regression sum of squares) given that SST = 500? a 137 question test bank with free response, multiple choice and true false questions covering all aspects of linear regression for the AP Statistics course. is a random variable with a mean or expected value of, The equation that describes how the dependent variable (y) is related to the independent variable (x) is called. The simple linear regression model assumes that the y values are statistically independent of each other but the residuals are statistically dependent of each other. d) $12,300 29. In a regression problem the following pairs of (x, y) are given: (2,1), (2,-1), (2,0), (2,-2) and (2,2). more than one independent variable ? One way to examine whether two variables might be linearly related is to construct a ______________________________. a) nominal or ordinal more than one dependent variable ? x 1 10 20 30 40 y 1 100 400 600 1200 They each come up with four different answers for the straight line regression model. Given the least squares regression line y hat = -2.88 + 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is: The residual is defined as the difference between the: actual value of y and the estimated value of y. actual value of x and the estimated value of x. actual value of y and the estimated value of x. actual value of x and the estimated value of y. Regression analysis was applied between demand for a product (Y) and the price of the product (X), and the following estimated regression equation was obtained. If the sum of squares due to regression (SSR) is 60, which of the following must be true? a) nominal or ordinal The simple linear regression model assumes that for any given value of x, the population of residuals will be normally distributed with a mean of zero and a standard deviation of 1. a) must be 1.0 = 120 - 10 X This implies that if advertising is $800, then the predicted amount of sales (in dollars) is: may be used to predict a value of y if the corresponding x value is given, implies a cause-effect relationship between x and y, can only be determined if a good linear relationship exists between x and y. Answer to Multiple choice questions on simple linear regression model and its use. (C) ML is … b) standard error of estimate c) 1.860 b) 2.015 If all the points in a scatter diagram lie on the least squares regression line, then the coefficient of correlation: a) 0.0 b) heteroscedasticity a) strength of the relationship between x and y 45. We add a feature in linear regression model and retrain the same model. a) increase of $1 in advertising is expected to result in an increase of $5 in sales In a regression analysis, the error term ? a) random error The coefficient of correlation assumes values between ____________________ and ____________________, inclusive. The ____________________ requires that the sum of the squared deviations between y values in the scatter diagram and y values predicted by the equation be minimized. Simple linear regression requires that the scales of measurement be expressed in either: If the coefficient of correlation is a positive value, then the regression equation, could have either a positive or a negative slope, Correlation analysis is used to determine, the strength of the relationship between the dependent and the independent variables, a specific value of the dependent variable for a given value of the independent variable. d) homoscedasticity coefficient a) 1.895 c) 2.365 predicted value of y for a given value of x. Try the multiple choice questions below to test your knowledge of this Chapter. Only one is correct. 51. Use the … d) -2.3 a) actual value of y and the estimated value of y 44. 51. In the sample regression line y-hat = b0 + b1x, the term b0 is the y-intercept; this is the value of y where the line intersects the y-axis whenever x = 0. 5 Questions which can teach you Multiple Regression (with R and Python) 7 Types of Regression Techniques you should know. a) 0.0 a) n-1 since only the slope is estimated from sample data a) increase by 1 pound Multiple choice questions. A specific value of the x-variable given a specific value of the y-variable c. Which of the following statements is true regarding the simple linear regression model a) 2.228 30. The simple linear regression model assumes that the y values are statistically independent of each other but the residuals are statistically dependent of each other. e) -0.88 This implies that an: FILL IN THE BLANKS: For a given value of x, the estimation interval for an individual y observation is called the: 41. 48. The regression line y hat = 3 + 2x has been fitted to the data points (4,8), (2,5), and (1,2). c) 13 c) homoscedasticity e) -1.4 In simple linear regression, the coefficient of correlation r and the least squares estimate of the population slope : Regardless of the value of x, the standard deviation of the distribution of y values about the regression line is the same. Ibrahim Abdellah Correlation analysis requires that the scales of measurement be expressed in either: 3. In a simple linear model, testing whether the slope of the population regression line is zero is the same as testing whether or not the population ____________________ equals zero. only one independent variable ? 34. b) n-1 since only the intercept is estimated from sample data c) homoscedasticity 1. c) must be either 1.0 or -1.0 52. a) 0.0 24. Toggle nav . b) 2592 d) 1.812 5. There are 60 questions. 12. Each student comes up with four different answers for the straight line regression model. a) 0.91 The value of the variation explained by the regression line can never be larger than 1.0. Linear relationship between continuous predictor variables and the outcome variable. c) 1800 39. However, if r is negative, then x and y are said to be ____________________ related. A total of 1,355 people registered for this skill test. c) must have the same sign You are almost guaranteed to encounter one free response question about correlation and/or linear regression on the AP Statistics exam. 55. 2. 26. 28. Questions of Algebra dealing with probability, etc. e) All of the above are true statements b) must have opposite signs b) increase $5 in advertising is expected to result in an increase of $5,000 in sales #CF001001 e) 1.0 1. c) increase of $1 in advertising is expected to result in an increase of $80,005 in sales c) 2.3 ______________________________ measures the strength of the relationship between the dependent and independent variables. d) 3240 This activity contains 15 questions. d) is a random error, or residual b) ordinal or ratio d) least-squares interval [Skip Breadcrumb Navigation]: [Skip Breadcrumb Navigation] Home: Chapter 13 : No Frames Version Multiple Regression. 1. multiple estimates are usually less efficient than simple estimates B.) MULTIPLE CHOICE QUESTIONS. The following values are listed as coefficients of correlation (r). c) increase by 5 pounds B)It becomes difficult to assess the individual importance of predictors and it increases the standard errors of the b coefficients making them unreliable. In the following multiple-choice questions, select the best answer. Try testing yourself before you read the chapter to see where your strengths and weaknesses are, then test yourself again once you’ve read the chapter to see how well you’ve understood. 31. a) a coefficient of determination equal to 1 Free download in PDF Regression Multiple Choice Questions and Answers for competitive exams. (ii) In fact Karen collected £22. Chapter 8: Multiple Choice Questions . This page lists down the practice tests / interview questions and answers for Linear (Univariate / Simple Linear) / Multiple (Multilinear / Multivariate) regression in machine learning.Those wanting to test their machine learning knowledge in relation with linear/multi-linear regression would find the test useful enough. Multiple linear regression (MLR), also known simply as multiple regression, is a statistical technique that uses several explanatory variables to predict the outcome of a … b) The total sum of squares (SST) is at least 60 b) -1.00 none of the above In order to estimate with 95% confidence the expected value of y in a simple linear regression problem, a random sample of 10 observations is taken. b) 0.06 27. Click the button below to ask an Academic Professional! Simple Linear Regression Multiple Choice Question Submitted by Mushayyed Muhammad Ali Khan Tamoor Ahmed 18 MS PT AMD 13 18 MS PT AMD 24 1 A regression analysis The MSE is an estimator of: a) ε b) 0 c) σ2 d) Y. b) 2.306 The regression line yhat = 3 + 2x has been fitted to the data points (4,8), (2,5), and (1,2). This implies that if the height is increased by 1 inch, the weight is expected to: The simple linear regression model assumes that regardless of the value for x, the standard deviation of the distribution of y values about the regression line is the same. none of the above; A measure of goodness of fit for the estimated regression equation is the ? c) The y-intercept is positive 20. The correlation coefficient is used to determine: a. d) The slope, b, is positive The vertical spread of the data points about the regression line is measured by the: d) actual value of x and the estimated value of y Another name for the residual term in a regression equation is: Another name for the residual term in a regression equation is: A)It becomes difficult to assess the individual importance of predictors and it decreases the standard errors of the b coefficients making them redundant. d) increase of $1 in advertising is expected to result in an increase of $5,000 in sales Given the least squares regression line yhat = -2.88 + 1.77x, and a coefficient of determination of 0.81, the coefficient of correlation is: beta sub 0 is the y-intercept of the regression line.
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