Represent a teachers recording of student demographics

Reference no: EM133727956

Case: You're starting to learn some important information about your data, but you still want to know more. It's time for a one-way analysis of variance (ANOVA). Unlike t-tests, which only allow for comparisons of two groups, ANOVA will allow you to examine potential group differences for variables with multiple levels.

Instructions

For this assessment:

Use the Data Analysis and Application template
For help with the statistical software, refer to the JASP Step-by-Step: ANOVA [PDF]document.

View JASP Speedrun: ANOVA [Video] for a brief tutorial video on this assessment.

Refer to the 7864 Course Study Guide [PDF] for information on analyses and interpretation.

For information on the data set, refer to the 7864 Data Set Instructions [PDF]document.
The grades.jaspfile is a sample data set. The data represent a teacher's recording of student demographics and performance on quizzes and a final exam across three sections of the course.

This assessment is on ANOVA. You will analyze the following variables in the grades.jaspdata set:

Variables and Definitions

VariableDefinitionSectionClass sectionQuiz3Quiz 3: number of correct answers
Step 1: Write Section 1 of the DAA: Data Analysis Plan

Name the variables used in this analysis and whether they are categorical or continuous.

State a research question, null hypothesis, and alternate hypothesis for the ANOVA.
Step 2: Write Section 2 of the DAA: Testing Assumptions

Test for one of the assumptions of ANOVA - homogeneity.
Create statistical software output showing the Levene's Test for Equality of Variances.

Paste the table in the DAA template.

Interpret the homogeneity test to determine whether the assumption of homogeneity is violated or is not violated.

Step 3: Write Section 3 of the DAA: Results & Interpretation

If the homogeneity assumption is not violated (Section 2), run the "Homogeneity corrections: None" version of the ANOVA. Follow up with the "Standard" version of the Tukey post hoc test.
However, if the homogeneity assumption is violated (Section 2), run the "Homogeneity corrections: Welch" version of the ANOVA. Follow up with the "Games-Howell" version of the Tukey post hoc test.

Reference no: EM133727956

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