s1.charset='UTF-8'; s1.setAttribute('crossorigin','*'); s0.parentNode.insertBefore(s1,s0); })(); A good experimental design serves three purposes, what are those three purposes? Identify | blisspaper

A good experimental design serves three purposes, what are those three purposes? Identify a research project that utilizes a quantitative method design. Explain how you would determine the validity and reliability to both the design and the methods of your research.