Evaluation of the effectiveness of spot remover fluid in different types of fabrics through experimental design

Abstract

This article provides information on the effectiveness of various laundry products, such as liquid stain remover. An experiment with coffee stains was done and it was assessed if there exists significant differences between these products. With the variance analysis done, we can conclude that there is evidence to confirm that the liquid stain removers are just as effective, at 5% significance. A block design was selected using the fabric type as a controlled variable. However, upon analyzing this block criterion in the results, it can suggest that, for future experiments, it is not necessary to lay the block and the randomized complete design can be used.