Which Statement Is Correct Concerning the Decomposition of the Total

question 17

Multiple Choice

Which statement is correct concerning the decomposition of the total variation?

• A)Because it is not known that all the groups have the same mean,we cannot calculate the variance of all the observations together.
• B)If the population mean is the same in all the groups,then the variation in the sample means and the sizes of the sample groups can be used to estimate the variance of Y.
• C)By comparing the Y variance estimates based on between-group and within group variation,we can test the null hypothesis.
• D)All statements are correct.

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Definitions:

Primary Reinforcer

A stimulus that satisfies a basic survival need and is inherently reinforcing without learning, such as food, water, or warmth.

Negative Reinforcement

involves the strengthening of a behavior because a negative condition is stopped or avoided as a consequence of the behavior.

Secondary Reinforcer

A stimulus that acquires its reinforcing capabilities by being linked with a primary reinforcer.

Primary Reinforcer

A naturally reinforcing item or outcome, such as food or water, that does not require learning to be considered rewarding.