Consistency of results is sought in order to develop a theory (Gauch, 2003).
The scientific method starts with the definition of a problem that cannot be explained readily. Alternatively, the problem may be having an existing explanation but there is a possibility of coming up with another explanation. The identification of such a phenomenon is then followed by a research of what is known about it. Equipped with this knowledge, the scientist then develops a hypothesis. A hypothesis is a calculated guess or prediction as the reason why the phenomenon occurs as it does (Gauch, 2003). An experiment is conducted to test the hypothesis. The accuracy of the results of an experiment depends largely on how it is designed. Observations of what transpires during the experiment are recorded and analyzed. Conclusions made from the results help accept or reject the hypothesis. The scientific method can be demonstrated using the selection of a particular brand of detergent.
There are many brands of detergents each having different properties. Consumers have different preferences and uses all of which guide their selection of a brand of detergent. An environmentally sensitive consumer may go beyond the use for which he needs a detergent to considering the impact that the detergent would have on the environment (Bhairi & Mohan, 2007). A viable problem for the application of the scientific method is the selection of a brand of detergent that cleans efficiently and has minimal negative impacts on the environment. A testable hypothesis will be; an efficient detergent is highly soluble (0.5 x 10-5 per liter of water) at working temperatures (250C±30C), has a low CMC (0.35 x 10-3 at 250C) and is non-toxic.
The criteria for determining the success of the actions to be used in testing the aforementioned hypothesis will include; whether or not solubility was measured at a pre-set working