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.
These are all mammals. These are all mammals. The definition of a mammal is a type of warm-blooded animal that breast feeds their babies and usually has hair. 1  An example of a mammal is a human.2  An example of a mammal is a whale.ny of various warm-blooded vertebrate animals of the class Mammalia, including humans, characterized by a covering of hair on the skin and, in the female, milk-producing mammary glands for nourishing the young. From Late Latin mammÄlis, of the breast, from Latin mamma, breast; see mÄ- 2 in Indo-European roots.