Deandre Is a New Teacher at a Local Elementary School

question 29

Multiple Choice

Deandre is a new teacher at a local elementary school. He decides to conduct a brief study testing the fifth graders' knowledge of science at the beginning of the school year and at the end of the school year. He will randomly assign students to either a "hands-on" science group that does experiments with each lesson plan or to a "video" science group that assigns videos and online tutorials in support of the science lesson plans. Based on this information which of the following would be considered the dependent variable (DV) ?

• A) type of science group
• B) pretest and posttest of science knowledge
• C) gender of fifth graders
• D) age of the fifth graders

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Definitions:

Type II Error

The error that occurs when a false null hypothesis is not rejected, often referred to as a "false negative."

Multiple Comparison

A statistical principle applied when multiple hypothesis tests are conducted simultaneously, requiring adjustment methods to control for the increased risk of Type I error.

Significant Difference

A statistical term indicating that the observed difference between two or more datasets is unlikely to be due to chance at a certain confidence level.

Tukey's Multiple Comparison

A statistical test used to find the differences between means in a set of data, part of post-hoc analysis following ANOVA.