Random Assignment

question 17

Multiple Choice

Random assignment

• A) ensures that studies can be replicated.
• B) is a good way to define the dependent variable.
• C) is difficult to achieve in research.
• D) must be used with great caution.
• E) minimizes any potential differences between the control and experimental groups.

---

Definitions:

Chi-square Test

A chi-square test is a statistical test used to determine if there is a significant difference between the expected frequencies and the observed frequencies in one or more categories.

Expected Frequencies

In statistics, these refer to the counts predicted by a probability model or hypothesis, used especially in the context of chi-squared tests.

Multinomial Experiment

An experiment that can result in one of more than two possible outcomes, where each outcome has a specific probability.

Binomial Experiment

A statistical experiment that has exactly two possible outcomes for each trial and a fixed number of trials.