Dr Eggleston Is Lecturing on Various Statistical Analyses in Class

question 124

Multiple Choice

Dr. Eggleston is lecturing on various statistical analyses in class. He notes the definition for a chi-square test of independence as:

• A) a statistical test in which both variables are categorical and determines if the distribution of participants across categories is different than expected.
• B) a statistical test that examines all of the possible combinations of conditions in a way that statistically accounts for the fact that we did not predict them ahead of time.
• C) a statistical test that determines whether responses from the different conditions are essentially the same or whether the responses from at least one of the conditions differ from the others.
• D) a statistical test that allows a priori decisions to test comparisons between groups predicted ahead of time.

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Definitions:

Probability

A measure of the likelihood that a particular event will occur, expressed as a number between 0 and 1.

Hypergeometric Probability

A statistical measure that calculates the likelihood of obtaining a specific number of successes from a finite population without replacement.

Discrete Random Variable

A variable that takes on a countable number of distinct values, often resulting from counting processes.

With Replacement

In sampling, "with replacement" means that once an item is selected, it's put back into the population before the next selection, making it possible to be chosen again.