why is goodness of fit important 
goodness of fit tests help determine if observed data aligns with what is expected decisions can be made based on the outcome of the hypothesis test conducted for example a retailer wants to know what product offering appeals to young people the retailer surveys a random sample of old and young people to identify which product is preferred using chi square they identify that with 95 confidence a relationship exists between product a and young people based on these results it could be determined that this sample represents the population of young adults retail marketers can use this to reform their campaigns 