# Normal distribution is completely different by the what

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A normal distribution, sometimes called the bell curve, is a distribution that occurs naturally in many situations. For example, the bell curve is seen in tests like the SAT and GRE. The bulk of students will score the average (C), while smaller numbers of students will score a B or D. An even smaller percentage of students score an F or an A. This creates a distribution that resembles a bell (hence the nickname). The bell curve is symmetrical. Half of the data will fall to the left of the mean; half will fall to the right.

Many groups follow this type of pattern. That’s why it’s widely used in business, statistics and in government bodies like the FDA:

Heights of people.

Measurement errors.

Blood pressure.

Points on a test.

IQ scores.

Salaries.

Many groups follow this type of pattern. That’s why it’s widely used in business, statistics and in government bodies like the FDA:

Heights of people.

Measurement errors.

Blood pressure.

Points on a test.

IQ scores.

Salaries.

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