Answer:
E(Y | Xi) = f (Xi) is known as conditional expectation function(CEF) or population regression function (PRF) or population regression (PR) for short. In simple terms, it tells how the mean or average of response of Y varies with X
Explanation:
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Advances were made in medicine and technology
Answer:
The subsequent state is knwon as excitation transfer.
Explanation:
<em>This theory supports that residual excitation from one stimulus will amplify the excitatory response to another stimulus. It is not limited to a single emotion, the excitation transfer process requires the presence of three conditions: the second stimulus occurs before the complete decay of residual excitation from the first one, there is the misattribution of excitation, and the individual has not reached an excitatory threshold before exposure to the second stimulus.</em>
I believe the answer is: b. allow efficient gathering of unobservant phenomena
Survey is conducted by letting the subject to fill up a set of questionaires by their own without the supervision of the researchers. Because of this, gathering needed information became extremely efficient since it can be conducted with very little labor resource and could take up large number of population.