Vincente Intends to Examine Differences Between Three Groups of District

question 51

Multiple Choice

Vincente intends to examine differences between three groups of district curriculum coordinators that received either no formal training, a web-based training, or a cooperative group experience as instruction for the core standards. He tested participants' knowledge of the standards both before treatment and then after treatment. Given his design, which of the following analysis should Vincente conduct?

• A) Independent t test
• B) Dependent t test
• C) ANCOVA
• D) ANOVA

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Definitions:

Null Hypothesis

An assumption that there is no significant difference or effect, used as the starting point for statistical testing.

Probability

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

Outcome

The result or effect of an action, situation, or event, often used in experiments to denote the dependent variable being measured.

Deductive Reasoning

The process of reasoning from one or more statements (premises) to reach a logically certain conclusion.