EDFN 1090/1092 Assignment #4 1. From statistics grades, John has a mean of 70 and Sx(standard deviation) of 15, Jane has a mean of 70 and Sx(standard deviation) of 5. Hint: create a 68% Range) a. Describe the two students in terms of consistency of their grades and give reason. b. Who is more accurately described as a 60 student and why? c. Who is more likely to do either extremely well or extremely poorly on the next exam? 2. As part of studying the relationship between reported SAT score and recorded SAT score, the following scores were obtained. 10 9 9 15 24 11 5 7 13 16 6 14 11 7 17 a. Determine the range and describe your answer in words. b. Determine the variance using the computational formula and describe your answer in words. c. Determine the standard deviation using the computational formula and describe your answers in words