Explain to me the following two tables in detail and what is the difference between them

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)(Y-MY) column? (far right column)

Please answer the questions using the data in Table 8. (Note: You must use either Microsoft Excel or Minitab for this problem and include the table they produce with your work.) Questions 8A to 8C Table 8. Data for problem 8. I2 18.7 18.7 I1 9.2 9.3 9.6 9.0 11.7 8.2 11.0 10.0 10.5 8.7 18.1 21.3 21.1 19.7 19.7 19.5 16.4 19.7 13 27.4 23.8 38.1 32.4 24.6 27.0 25.0 27.5 26.3 43.1 80.6 62.8 137.3 94.8 62.0 72.6 68.2 79.5 86.9 154.1 8A. Use technology to find the multiple regression equation for the data shown in Table 8. (Note: You must use either Microsoft Excel or Minitab for this problem and include the table the app produces with your work to get full score.) 8B. Find the standard error of estimate and interpret the result. 8C. Find the coefficient of determination and interpret the result. (Note: do not use the adjusted R-square.)

The head of the production would like to know how many work hours that the first 55% of the grand pianos need for completion. Use the data from problem 1 to answer this question for her. Please use excel or explain excel input to get answer