ways to improve reliability of an experiment

How can an experiment be invalid, unreliable but still accurate? human reaction delay, lack of good instruments) produce results that you would not have foreseen (inaccurate). But then choose to do it only once and accept it (unreliable) and, for a variety of reasons (e.g. Plan out everything so that if properly done, you should expect your experiment to produce useful results. How can an experiment be unreliable, inaccurate but still valid?ĭesign a method that actually addresses the aim (valid).

But now, let's try considering how we may succeed at only ONE of these: It becomes apparent that trying to achieve all 3 objectives is considerably more difficult than achieving none of them. Of course, there are tons of ways of creating the worst possible experiment ever. One way is to simply design an experiment that has nothing to do with the aim (invalid), choose not to repeat it (unreliable) and use simplistic or broken instruments that may yield seemingly contradictory results (inaccurate). How can an experiment be invalid, unreliable AND inaccurate? It has been repeated multiple times (reliability) to ensure that virtually the same results are produced, and your equipment is well chosen to reflect better data as well as being close to the theoretical values (accuracy). To achieve all three, you essentially have the perfect experiment and it is basically PERFECT to test the aim (validity). How can an experiment be valid, reliable AND accurate? Let's review some of the more obvious ones: In this post, I would like to explore the possibilities of achieving only one or two of the three main criteria. However this lead to the second observation - the way students interpreted the terms lead them to believe that they must somehow be correlated, if not depend on each other. The first is the fact that students tended to juggle between all the terms at once and hence mixing up which is what. However, there were two things that I bumped into often during my HSC studies. You must ALWAYS consider to what extent your investigation was reliable, valid and accurate. By now, many of you will know that whilst there are many things to address in scientific discussions, the main 3 are those listed above.

Ways to improve reliability of an experiment