Answer:
Standardized variable
Step-by-step explanation:
Standardized variable: In research methods, the term "standardized variable" is also referred to as "standard score" or "z-score" and is described as one of the different variables that have been "re-scaled" to possess a standard deviation of 1 and a mean of 0. Moreover, these variables tend to contain different students score on a specific test related to the wisdom of social studies, mathematics, and science. However, teachers and authors generally use a standardized variable in contrast with control variables and it is supposed to be "constant" in specific research or an experiment.
In the question above, the given statement represents the "standardized variable".