A researcher is conducting research on using technology in teaching. The researcher has two groups. The first group receives instruction via a PowerPoint presentation that is online. The second group attends a class and receives instruction from a teacher face to face. The researcher classifies the students based on when they volunteer for the study. The first 50 students who volunteer receive online instruction. The next 50 receive instruction by attending a class with a teacher. The type of instruction the student receives is the:

Standardized variable

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".

answer; i believe the correct answer is customer,manufacturer, service provider,general public ; quality is primarily the responsibility of all all employees in the organization.

answer; i believe that the correct answer is ( rivers);