FRAME 45.

There are six characteristics of the normal curve which, when combined, make it different

from any other type of distribution.

First, it is SYMMETRICAL around the arithmetic mean. In other words, the half on each side of

the mean will exactly fit the other half when 'flipped over." Both identically shaped halves of the

curve together take on the general shape of a bell.

FRAME 46.

Second, the tails at each end of the normal distribution get closer and closer to the base line,

the farther they are from the mean. The tails never touch the base line, however. We say the tails

are asymptotic to the horizontal axis. This allows for extreme values - the three foot midget, the

eight foot giant, very low expenses, or very high expenses, whichever the case may be.

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