Question (Category: Math
Why is experimental design is a key factor in the success of the scientific inquiry?
Hi. Thank you for your question.Your answer is below.Kind regards,SusanExperimental design impacts the validity of the experiment. Validity is the extent to which the experiment accurately shows cause-and-effect relationships. The design determines the likelihood of making either a Type I or Type II error. A poor design might fail to control for confounding (lurking) variables. For example, suppose I pop all the name-brand popcorn on Day 1 and all the generic on Day 2. The experimenter (the person doing the popping) might change their technique between days, creating a false result. Another poor design would be to pop the two kinds of popcorn in different microwaves, which might have different factors. By using a design that factors out as many variables as possible, any causal relationship found is more likely to be a valid one.http:www.socialresearchmethods.netkbdesexper.php
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