sebaran Weibull distributionsgeus areilahar oftendipake used todina model the time until awaktu givensanggeus technicalalat deviceteknis failsgagal.
IfLamun thelaju failuregagalna ratealat ofnurun thedumasar devicekana decreases over timewaktu, onehiji choosespilihan ''k'' < 1 (resulting inhasil atina decreasingnurunna densitydensiti ''f''). If the failure rate of the device is constant over time, one chooses ''k'' = 1, again resulting in a decreasing function ''f''. If the failure rate of the device increases over time, one chooses ''k'' > 1 and obtains a density ''f'' which increases towards a maximum and then decreases forever. Manufacturers will often supply the shape and scale parameters for the lifetime distribution of a particular device. The Weibull distribution can also be used to model the distribution of wind speeds at a given location on Earth. Again, every location is characterized by a particular shape and scale parameter.
The [[expected value]] and [[standard deviation]] of a Weibull [[random variable]] can be expressed in terms of the [[gamma function]]:
