The morbidly obese group has a greater standard deviation than the obese group. That means:
a. The obese data is a bit more spread out than the morbidly obese group.
b. The morbidly obese data is a bit more spread out than the obese group.
c. The morbidly obese group lost weight faster than the obese group.
d. The morbidly obese group weighs more than the obese group