If Done Correctly,stratified Sampling Can Actually Decrease the Standard Error

question 63

Multiple Choice

If done correctly,stratified sampling can actually decrease the standard error of the estimator by

• A) making sure the strata are more homogeneous on the variables for which statistics will be calculated
• B) making sure each strata forms a representative sample of the population
• C) decreasing the number of categories within each of the variables for which statistics will be calculated
• D) making sure the sample is sufficiently large to ensure a lower sampling error

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Definitions:

Fixed-Ratio

A schedule of reinforcement where a response is only rewarded after a specified number of responses, often used in behaviorist experiments.

Fixed-Interval

In the context of operant conditioning, a schedule of reinforcement where rewards are given at fixed times, provided the correct response is made.

Smelled Food

The act of detecting the aroma of food, which can trigger physiological reactions such as salivation and influence appetite.

Operant Behavior

Behavior emitted spontaneously or voluntarily that operates on the environment to change it.