Complete the Independent Samples t-test Worksheet, which provides step-by-step instructions on how to conduct and interpret the findings of an independent sample t-test in SPSS

DATA ANALYSIS: T-TEST

For this Assignment, first identify two independent variables from your data set. For example, these could be male and female subjects or graduate students and undergraduate students. Next, identify a variable in your data set for which you want to explore a difference between the two groups.

In this Assignment, you complete the Independent Samples  t-test Worksheet, which provides step-by-step instructions on how to conduct and interpret the findings of an independent sample  t-test in SPSS. After you have conducted the descriptive statistic, write the results in APA format. An example is provided in the worksheet.

To prepare:

· Complete the Independent Samples  t-test Worksheet found in the Learning Resources.

When starting or if you have already started your week eight assignment, please be sure that you have opened up the correct dataset –  CHAPTER 11, DATASET 1.   It is critical that you have the dataset that processes/analyzes independent t-tests on two groups of Alzheimer’s patients who are exploring two different interventions.  

LEARNING RESOURCES

· Salkind, N. J., Frey, B. B.  (2020c).  Statistics for people who (think they) hate statistics (7th ed.). Sage.

·

· Chapter 11, “t(ea) for Two: Tests Between the Means of Different Groups” (pp. 198–212)

· Chapter 12, “t(ea) for Two (Again): Tests Between the Means of Related Groups” (pp. 213–243)

For this week’s Assignment, download this data set to be used with the Descriptive Statistics Worksheet:

· Salkind, N.J. (2017d).  t(ea) for Two: Tests Between the Means of Different Groups  Download t(ea) for Two: Tests Between the Means of Different Groups [Data file]. Retrieved from https://edge.sagepub.com/salkind6e/student-resources/chapter-11/data-sets Statistics for People Who (Think They) Hate Statistics by Salkind, N.J. Copyright 2016 by Sage College. Reprinted by permission of Sage College via the Copyright Clearance Center.

· Document:  Independent Samples t-test Worksheet  Download Independent Samples t-test Worksheet (Word document)

Independent Samples t-Test Worksheet

Objectives

· Compute an Independent Samples t-test in SPSS

SPSS System

· Make sure you gained access to SPSS. See the online classroom for instructions.

· Download the data set found in the Learning Resources.

· Open the data set file named “Chapter 11 Data Set 1.”

Independent Sample t-test

Follow the instructions from the Statistics for People Who (Think They) Hate Statistics textbook, Chapter 11, “t(ea) for Two: Tests Between the Means for Different Groups,” in the section, “Using SPSS to Perform a t-Test.”

Worksheet Assignment

Run an independent sample t-test following the instructions in the textbook. The output of the test will provide you with the differences between groups. First, check for significance, which is provided in the chart under “Sig. (2-talied).” If there is significance, look at the Group Statistics box under Mean. This will give you the information you need to state if there is significance between groups. If there is no significance, you still have results that mean something. Write them up in APA format. Follow the example below.

APA Write-Up Example

An independent t-test was conducted to compare the mean IPV physical victimization scores of male high school students (N=172, M=2.70, SD=3.82) with those of female high school students (N=64, M=2.25, SD=3.67). This comparison was found not statistically significant. The results indicate that boys and girls did not differ in likelihood of being victims of physical violence.

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