# normal distribution

## Definitions

### Economics

- noun a graph of distribution which is symmetrical around a mean. It is shaped like a bell.

### Electronics

- For a random variable, a probability distribution which is
__symmetrical__ about the mean value, and which continuously diminishes in value until reaching __zero__ at each __extreme__. It is utilized to determine the probability of the value of the variable falling within a given interval of values, and when graphed has the shape of a symmetrical __bell__. Various __phenomena__, such as some natural frequencies, have a normal distribution. Also called bell-shaped distribution, or Gaussian distribution.

### Health Economics

- noun a statistical
__term__ indicating that the majority of results will appear towards the centre of a graph with smaller amounts towards the top and bottom

### Marketing

- noun a term used in sampling theory, referring to the results of a sample and meaning a symmetrical distribution of values around a mean or average, so that you can be confident that the sample is properly representative of the people being surveyed in a study

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