# std::normal_distribution::mean, stddev

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< cpp‎ | numeric‎ | random‎ | normal distribution

RealType mean() const; | (1) | (since C++11)
RealType stddev() const; | (2) | (since C++11)

Returns the parameters the distribution was constructed with.

1) Returns the mean μ distribution parameter. The mean specifies the location of the peak. The default value is 0.0.
2) Returns the deviation σ distribution parameter. The default value is 1.0.

### Parameters

(none)

### Return value

1) The mean μ distribution parameter.
2) The deviation σ distribution parameter.

### See also

param | gets or sets the distribution parameter object (public member function)

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