What Is Validity Of The Instrument In Research? Validity is often defined as the extent to which an instrument measures what it asserts to measure [Blumberg et al., 2005]. Validity of a research instrument assesses the extent to which the instrument measures what it is designed to measure (Robson, 2011). It is the degree to
How Do You Know If Your Results Are Repeatable? A result is repeatable if doing the same experiment over and over again produces the same answer. The mathematical language that describes repeatability is statistics. What makes an experiment repeatable? For repeatability to be established, the following conditions must be in place: the same location; the
Which Are Ways To Improve The Design Of The Experiment? You can increase the validity of an experiment by controlling more variables, improving measurement technique, increasing randomization to reduce sample bias, blinding the experiment, and adding control or placebo groups. Which are potential sources of error in the experiment? Common sources of error include instrumental,