The fluctuation of an individual's scores on a standardized test would most likely be a reflection of

The fluctuation of an individual’s scores on standardization test would most probable be a reflection of measurement error or measurement bias. In addition to political comparative, whether a specified measure successfully apprehensions or signifies what we are researching refers to measurement validity and the part of worthy hypothesis testing is researching other cases afar those of direct interests, weighing the results in contradiction of obtainable evidence and avoiding bias in the testing procedure.