For Quasi-Experiments

question 22

Multiple Choice

For quasi-experiments,

• A)there is a particularly important potential threat to internal validity, namely whether the "as if" randomization in fact can be treated reliably as true
• Randomization.
• B)there are the same threats to internal validity as for true randomized controlled experiments, without modifications.
• C)there is little threat to external validity, since the populations are typically already different.
• D)OLS estimation should not be used.

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Definitions:

Two-Tail Test

A statistical test that considers extreme values in both tails of the distribution to test for a significant difference.

Multinomial Experiment

An experiment that leads to outcomes classified into more than two categories, which are mutually exclusive and exhaustive.

Binomial Experiment

A statistical experiment that fits the criteria of having a fixed number of trials, two possible outcomes per trial, identical probability of success, and each trial being independent.

Multinomial Experiment

An experiment that leads to outcomes categorized into two or more non-overlapping categories.