12.1 Problems
12.1. Determine the value of the coefficient of correlation, r, for the following data.
12.2. Determine the value of r for the following data.
12.3. In an effort to determine whether any correlation exists between the price of stocks of airlines, an analyst sampled six days of activity of the stock market spread out over four months.
Using the following prices of Delta stock and Southwest stock, compute the coefficient of correlation. Stock prices have been rounded off to the nearest tenth for ease of computation.
12.1 Problems
12.1. Determine the value of the coefficient of correlation, r, for the following data
Y 18 12 13 8 7 7 4
12.2. Determine the value of r for the following data
X 15 8 29 68 71 10 43 6 Y 34 9 51 0 30 13 22 55 0
12.3. In an effort to determine whether any correlation exists between the price of stocks of airlines, an analyst sampled six days of activity of the stock market spread out over four months. Using the following prices of Delta stock and Southwest stock, compute the coefficient of correlation. Stock prices have been rounded off to the nearest tenth for ease of computation.
Delta Southwest 47.96 51.76 52.14 58.41 49.93 58.74 53.78 62.58 54.17 57.34 48.96 55.68