Question

"In survey research, _____________ is typically used to ensure that a sample is representative, whereas in experiments, _____________ is used to balance differences between subjects across the various experimental groups."

Answer 1

Answer: Random sampling ; Random assignment

Explanation: In choosing subjects or samples to be used in a research study, involving the entire population in the study might seem unrealistic or virtually impossible, Therefore the need to select samples from the population which will be representative of the entire population, giving all samples an equal chance of being selected becomes imperative, such sampling method is generally called random sampling.

On the other hand, when assigning subjects or participants into experimental groups, eliminating bias which could result from manual assignment of subjects into the various groups is required. Random assignment technique ensures that variation in the subjects associated with the various experimental groups is stabilized.

Answer 2

random sampling; random assignment

Step-by-step explanation:

"In survey research, random sampling is typically used to ensure that a sample is representative, whereas in experiments, random assignment is used to balance differences between subjects across the various experimental groups."

In survey research to balance difference among subjects and reduce any form of study bias, the respondents are randomly sampled/selected among the population of interest so as to be a representative of the target population. In experimental research on the other hand, to take care of any experimental bias, the experimental treatments are randomly assigned to the experimental animals or human subjects.