From his statistics grades, Guchi has aX of 60 and SX = 20. Pluto has aX of

Question:

From his statistics grades, Guchi has aX of 60 and SX = 20. Pluto has aX of 60 and SX = 5.
(a) Who is the more inconsistent student, and why?
(b) Who is more accurately described as a 60 student, and why?
(c) For which student can you more accurately predict the next test score, and why?
(d) Who is more likely to do either extremely well or extremely poorly on the next exam?