One of the Key Requirements of Good Experimental Design Is

question 76

Multiple Choice

One of the key requirements of good experimental design is to ensure that at the beginning of a study participants in each experimental condition are:

• A)manipulated by each other.
• B)equivalent to each other.
• C)randomly assigned.
• D)counterbalanceD.

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Definitions:

Sampling Error

The difference between a population parameter and a sample statistic that results from selecting a sample.

Expected Value

The predicted average outcome of a random variable, computed as the weighted average of all possible values.

Stratified Random Sampling

A probability sampling method in which the population is first divided into strata and a simple random sample is then taken from each stratum.

Strata

Subsets of a population that are known to be homogeneous with respect to some characteristic, used in stratified sampling.