Constructor Detail

• Normal

  public Normal()

  Default constructor. Mean is set to zero and standard deviation is set to one.

• Normal

  public Normal(double m,
                double s)

  Create a distribution with the given mean and standard deviation.

  Parameters:

  m - the mean.

  s - the standard deviation.

Method Detail

• cumulativeProbability

  public double cumulativeProbability(double x)
                               throws NumericException

  The CDF for this distribution. This method returns P(X < x).

  Specified by:

  cumulativeProbability in class ContinuousDistribution

  Parameters:

  x - the value at which the CDF is evaluated.

  Returns:

  CDF for this distribution.

  Throws:

  NumericException - if the cumulative probability can not be computed.

• getMean

  public double getMean()

  Access the mean.

  Returns:

  the mean.

• getStandardDeviation

  public double getStandardDeviation()

  Access the standard deviation.

  Returns:

  the standard deviation.

• inverseCumulativeProbability

  public double inverseCumulativeProbability(double p)
                                      throws NumericException

  The inverse CDF for this distribution. This method returns x such that, P(X < x) = p.

  Specified by:

  inverseCumulativeProbability in class ContinuousDistribution

  Parameters:

  p - the cumulative probability.

  Returns:

  x

  Throws:

  NumericException - if the inverse cumulative probability can not be computed.

• setMean

  public void setMean(double m)

  Modify the mean.

  Parameters:

  m - the new mean value.

• setStandardDeviation

  public void setStandardDeviation(double std)

  Modify the standard deviation.

  Parameters:

  std - The new standard deviation value.