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Define a normally distributed variable. For a real-valued random variable, a normal distribution is a sort of continuous probability distribution.

The normally distributed variable are,

A regularly distributed variable is a random variable with a normal distribution.

A bell-shaped curve is the normal distribution curve.

The curve is known as a normal curve, and the illustration is as follows:

To define the normally distributed population.

The term "normally distributed population" refers to a population that is considered under a random variable having a normal distribution.

A bell-shaped curve is the normal distribution curve.

The curve is known as a normal curve, and the illustration is as follows:

To define the normally distributed population.

The mean and standard deviation of the distribution are the parameters for any distribution.

Curve of normal distribution.

The mean and standard deviation of the data are also parameters.

Generally the mean is symbolically represents by $\mathrm{μ}$and the standard deviation is symbolically represents by$\mathrm{σ}$.