Question

Why is random assignment important? random assignment ensures that the groups are matched on some variable before the experiment. random assignment helps to make the groups equal on a variety of variables. random assignment ensures that each member of the population has an equal chance of being chosen to be in the experiment. random assignment increases the test-retest reliability of the experiment?

Answer 1

The answer is: Random assignment helps to make the groups equal on a variety of variables. 

This is because there are still many confounding variables present throughout a random sample that you can't control. By using random assignment, the sample is randomly sorted into groups, decreasing error of the results due to a confounding variable. 

Answer 2

Random assignment is important because it helps to make the groups equal on a variety of variables.

What is random assignment?

Random assignment is a procedure used in experiments to create multiple study groups that include participants with similar characteristics so that the groups are equivalent at the beginning of the study.

Random assignment helps reduce the chances of systematic differences between the groups at the start of an experiment.

Hence, mitigates the threats of confounding variables and alternative explanations.

However, the process does not always equalize all of the confounding variables.

So, Random assignment helps to make the groups equal on a variety of variables because there are still many variables present throughout a random sample which is out of scope.

By using random assignment, the sample is randomly sorted into groups, decreasing error of the results due to a confounding variable.

Learn more about random assignment here:

https://brainly.com/question/14233462

#SPJ2