In a simple regression problem, r and B may have opposite signs. O must have the same sign. O must have opposite signs. O are equal. O O O
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- Wall Street financiers 3,800 4,100 2,200 5,300 artists 1,300 1,700 2,300 2,100 Consider a research design in which four Wall Street financiers and four artists are measured on calorie intake. Their occupation is what sort of variable, standing in as the independent variable? (This is a very short answer).Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4 r = ____i need this. HELP ASAP 13) The categorical variable marital status has the following values: single, married,separated, divorced, and widowed. To include marital status in a multiple regressionmodel, how many indicator variables will be included?A) ThreeB) TwoC) FiveD) OneE) Four
- Data in the table comes from the NASA Global Climate Change website. It gives the average globaltemperature, in Celsius, for the given year. Use both rows for your calculations. For this problem, youwill see how well year correlates with the average temperature. Let ? be the number of years since1984 and ? be the average global temperature in degrees Celsius.Year 1984 1986 1988 1990 1992 1994 1996 1998 2000Temp 0.16 0.18 0.38 0.45 0.22 0.31 0.33 0.61 0.40Year 2002 2004 2006 2008 2010 2012 2014 2016 2018Temp 0.63 0.54 0.64 0.54 0.72 0.64 0.75 1.02 0.85a. Make a scatterplot of the data. Being sure to clearly label each axis. Keep in mind howeach variable is defined. Based on this scatterplot, is a linear model reasonable for this data set?Briefly explain.b. Determine the correlation coefficient for this data. Interpret this value in context.c. Determine the coefficient of determination for this data. Interpret this value incontext.d.State the regression line for the data.e. What does the…Need it asap pls.The following data is the number of tickets sold and the jackpot value for the Mega Millions lottery. The jackpot value is in millions of dollars and the number of tickets sold is in millions. Jackpot value 334 127 300 227 202 180 164 145 255 Number of tickets sold 54 16 41 27 23 18 18 16 26 r= 0.947 tickets sold -10.87 +0.17 (jackpot value) Which is the independent variable and which is the dependent variable? X= independent variable = Y= dependent variable Interpret ². Interpret the slope. Predict the number of tickets sold when the jackpot value is 500 million dollars. Would you feel comfortable using the model for this value? Why or why not.
- A random sample of 136 adults were asked to report the number of hours per week the spent on a computer and their number of years of education. The linear model equation below describes the relationship between the mean computers hours and years of education. computers == 9.12 ++ 0.8 ×× education Based on this linear model, which of the following statements is correct? a) An adult who has no years of education is expected to spend 9.12 hours per week on a computer. b) An adult who has 1 more year of education than another is expected to spend 9.12 more hours per week on a computer. c) An adult who spends 1 more hour per week on a computer than another is expected to have had 9.12 more years of education. d) An adult who spend zero hours per week on a computer is expected to have 9.12 years of education.L8Q6.Identify the variables - Students who spend more time playing video games and working each week will have a lower GPA. 3. State the two quasi-independents variable and the one dependent variable (make sure to label each as QIV or DV)
- Below is data for two variables, X and Y. Answer the questions that follow. X Y X-MX Y-MY (X-MX)2 (Y-MY)2 (X-MX)(Y-MY) 3 3 -2 -1 4 1 2 4 3 -1 -1 1 1 ___ 6 4 1 ___ 1 0 0 7 6 2 2 ___ 4 4 What is the missing value under the (X-MX)2 column?Suppose that two variables, say x and y, have a very strong negative linear relationship. By virtue of the fact that the relationship is a STRONG, NEGATIVE, LINEAR relationship, which of the following statements is (are) true? Select ALL that apply. A. If the value of x increases, then we expect the value of y to decrease. B. If the value of x decreases, then we expect the value of y to decrease as well. C. If the value of x decreases, then we expect the value of y to increase. D. If the value of x increases, then we expect the value of y to increase as well.Below are the results of a survey of America's best graduate and professional schools. The top 25 business schools, as determined by reputation, student selectivity. placement auccess, and graduation rate, are listed in the table. For each achool, thres variables were measured: (1) GMAT acore for the typical incoming student; (2) student acceptance rate (percentage accepted of all studentas who applied); and (3) atarting salary of the typical graduating student. School Наrvard Acc. Rate Salary 63,000 60,000 GMAT 1. 644 15.0% 2. Stanford 665 10.2 3. Репn 644 19.4 55,000 4. Northwestern 640 22.6 54,000 MIT Chicago Duke 5. 650 21.3 57,000 6. 632 30.0 55,269 7. 630 18.2 53,300 52,000 55,269 53.300 8. Dartmouth 649 13.4 Virginia Michigan Columbia 9. 630 23.0 10. 620 32.4 11. 635 37.1 52,000 648 630 12. Cornell 14.9 50,700 13. CMU 31.2 52,050 14. UNC 625 15.4 S0,800 15. Cal-Berkeley 634 24.7 S0,000 16. UCLA 640 20.7 51,494 17. Texas 612 28.1 43,985 18. Indiana 600 29.0 44,119 19. NYU 610…