frequency-distribution-curves-(histograms)What frequency distribution curves (histograms) can reveal:???Bell curve(normal distribution,Gauss distribution)deviations should be more closelyinvestigated Distribution with twoor more peaks. The combination representsmany distributions.This usually shows parallelprocesses, such as two finishing lines for identicalparts. It is recommended that the data be separated.The combination should beorganized according totime. The distribution isrectangular without a clearpeak and has a steep end.It probably indicates atrend."Crooked" distributionindicates a naturallimit. Truncated distribution.Ends as though it werecut off. Caution: caneasily be confused witha pronounced crookeddistribution. It denotesa sorting process with acause that must be determined.Distribution with peaksat the edge. Unnatural!A sign of manipulation.It must be investigated andunderstood.Inconsistent distributionthrough alternating smalland large frequencies.This is probably due tomeasurement or roundingflaws, and/or unsuitableclassifications.Trend, continual shifting ofthe frequency distribution