Reference no: EM132493112
Point 1: Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28, and 25. Compute the 21st, 26th, 57th, and 67th percentiles. If needed, round your answers to two decimal digits.
Point 2: Five observations taken for two variables follow.
xi 4 6 11 3 16
yi 50 50 40 60 30
Question a. What does the scatter diagram indicate about the relationship between the two variables?
Question b. Compute the sample covariance. If needed, round your answer to one decimal digit. If your answer is negative use "minus sign".
Question c. Interpret the sample covariance.
Question d. Compute the sample correlation coefficient. If needed, round your answer to three decimal digits. If your answer is negative use "minus sign".
Question e. Interpret the sample correlation coefficient.