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Weibull:: (1 method):
distribution()
distribution($value, $alpha, $beta, $cumulative) X-Ref |
WEIBULL. Returns the Weibull distribution. Use this distribution in reliability analysis, such as calculating a device's mean time to failure. param: mixed $value Float value for the distribution param: mixed $alpha Float alpha Parameter param: mixed $beta Float beta Parameter param: mixed $cumulative Boolean value indicating if we want the cdf (true) or the pdf (false) return: array|float|string (string if result is an error) |