# [SOLVED] T-TEST APPLICATION AND INTERPRETATION

“ASSIGNMENT:
Instructions
Complete the following for this assignment:
 For this assignment, you will use the Data Analysis and Application
template (DAA Template [DOC]).
 For help with SPSS, refer to IBM SPSS Step-by-Step Guide: t
Tests [DOC].
 For help copying SPSS output into your DAA, review the Copy/Export
Output Instructions [HTML].
 For information on the data set, you may find the Data Set Instructions
 Refer to the 7864 Course Study Guide for information on analyses and
interpretation.

The  grades.sav  file is a sample SPSS data set. The data represent a teacher&#39;s
recording of student demographics and performance on quizzes and a final exam
across three sections of the course. Each section consists of 35 students (N =
105). There are 21 variables in  grades.sav .
This week’s assignment is on t-tests. You will analyze the following variables in
SPSS Variable Definition
Gender female = 1; male = 2

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Step 1: Write Section 1 of the DAA: The 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
independent samples t-test.

Step 2: Write Section 2 of the DAA: Testing Assumptions
Test for one of the assumptions of t-tests – homogeneity of variance.
 Create SPSS output showing the Levene&#39;s Test for Equality Variances.
Run the Levene&#39;s test on the dependent variable test for the entire sample.
Do not split the data up by gender before running the homogeneity test.
 Paste the table in the DAA.
 Interpret the Levene&#39;s test.

Step 3: Write Section 3 of the DAA: Results and Interpretation
Paste the SPSS output of the t test. Below the output:
 Report the means and standard deviations for each group.
 State the results of the t-test using the &quot;Assume equal variances&quot; row.
 Interpret the statistical results against the null hypothesis and state
whether it is accepted or rejected.

Step 4: Write Section 4 of the DAA: Statistical Conclusions
 Provide a brief summary of your analysis and the conclusions drawn about
this t-test.
 Analyze the limitations of the statistical test and/or possible alternative

Step 5: Write Section 5 of the DAA: Application
Analyze how you might use the independent samples t-test in your field of study.
 Name an independent variable and dependent variable that would work for
such an analysis and why studying it may be important to the field or
practice.
Submit your DAA template as an attached Word document in the assignment
area.”

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