Ms. Sweetwater’s biology class had a standard deviation of 2.4 on a standardized test, while Ms. Quincy’s biology had a standard deviation of 1.2 on the same test. What can be said about these two classes? a. Ms. Sweetwater’s class is more homogeneous than Ms. Quincy’s. b. Ms. Quincy’s class is less heterogeneous than Ms. Sweetwater’s. c. Ms. Quincy’s class did less well on the test than Ms. Sweet- water’s. d. Ms. Sweetwater’s class performed twice as well on the test as Ms. Quincy’s.