If a researcher created two groups by assigning the first 30 people to the experimental group and the last 30 to the control group,the process would violate the principle of

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Random assignment is the process of assigning participants to groups in an unbiased manner, with equal chances of being assigned to either group. By assigning the first 30 people to the experimental group and the last 30 to the control group, the researcher is not using a random process and is violating the principle of random assignment. This can lead to confounds, as there may be pre-existing differences between the groups that are not controlled for.

If a Researcher Created Two Groups by Assigning the First