The following table shows different prices of a product at certain weeks. x (Weeks) y (Price($)) 7 24 8 22.28 9 22.66 10 17.84 11 20.82 12 16.6         (a) Based on the data shown above, compute the correlation coefficient accurate to three decimal places. r=r= Correct (b) Find the proportion of the variation in Price that can be explained by the variation in the values of Weeks. Report your answer as a percentage accurate to one decimal place. (Example: If the answer is 0.1234, you would enter 12.3 without the percent symbol.) r2=r2= Correct %

Is y a function of x on the scatter plot? Why or why not?

This is an MCQ kindly answer with proper explanation

x y 59.9 72.8 61.4 128.8 33.2 7.2 41.4 -111.7 61.9 160.4 50.3 130.4 47.4 -65.7 43.2 -37.7 48.2 190.5 32.2 -72.1 Find the correlation coefficient and report it accurate to three decimal places. r = CorrectWhat proportion of the variation in y can be explained by the variation in the values of x? Report answer as a percentage accurate to one decimal place.R² = %

Jobs and productivity! How do retail stores rate? One way to answer this question is to examine annual profits per employee. The following data give annual profits per employee (in units of 1 thousand dollars per employee) for companies in retail sales. Assume ? ≈ 4.0 thousand dollars. 4.2 6.8 3.5 8.8 8.1 5.7 8.0 6.4 2.6 2.9 8.1 −1.9 11.9 8.2 6.4 4.7 5.5 4.8 3.0 4.3 −6.0 1.5 2.9 4.8 −1.7 9.4 5.5 5.8 4.7 6.2 15.0 4.1 3.7 5.1 4.2   (a) Use a calculator or appropriate computer software to find x for the preceding data. (Round your answer to two decimal places.)  ____________________thousand dollars per employee(b) Let us say that the preceding data are representative of the entire sector of retail sales companies. Find an 80% confidence interval for ?, the average annual profit per employee for retail sales. (Round your answers to two decimal places.) lower limit      ______thousand dollars upper limit…

Question 16 Gold was sold at $1325 per ounce last year. This year it sells for $1925 per ounce. What is the relative change in the price of the gold in one year? Find the closest answer. 45.28% O none of these aswers. 72% 31.16% O O LG