A Statistical Analysis Is Internally Valid If

question 55

Multiple Choice

A statistical analysis is internally valid if

• A)all t-statistics are greater than |1.96|
• B)the regression R2 > 0.05
• C)the population is small,say less than 2,000,and can be observed
• D)the statistical inferences about causal effects are valid for the population studied

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Definitions:

Cerebral Hemisphere

One of the two halves of the brain, either left or right, that control various functions such as speech, movement, and thought.

Falx Cerebri

Dural fold between the two cerebral hemispheres.

Tentorium Cerebelli

A structure of the meninges, consisting of a fold of dura mater separating the cerebrum from the cerebellum.

Dural Venous Sinus

Channels found between the layers of the dura mater in the brain, which collect and drain venous blood from the brain back to the heart.