If a fund's returns follow a normal distribution, then approximately 68% of the time they will fall within one standard deviation of the mean return for the fund, and 95% of the time within two standard deviations.
Mammals are a particular class of animal. What makes an animal a mammal are several things. First, they must have glands that give milk.This is to feed their babies. Second, they are warm-blooded.Third, all mammals have fur or hair. Humans are mammals and so are dogs, whales, elephants, and horses.hat makes an animal a mammal are several things. First, they must have glands that give milk. This is to feed their babies. Second, they are warm-blooded. Third, all mammals have fur or hair. Humans are mammals and so are dogs, whales, elephants, and horses.
The official definition for the word mammal is a warm-blooded  vertebrate animal of a class that is distinguished by the  possession of hair or fur, the secretion of milk by females for the  nourishment of the young, and the birth of live young.. Mammals are warm blooded. They also have hair or fur.