Shared by 
Unlock all 26 pages
Get it free by sharing your own notes, buy just this one, or become a member and unlock documents with your plan.
How to unlock this document
Choose the way that suits you. Each one gives you all 26 pages to read online and the PDF to download.
Share your notes, unlock for free
2 free unlocks for every 5 approved uploads
- Upload your own lecture notes, assignments, essays or past papers
- PDF, Word, PowerPoint and Excel files all work, and you can send many at once
- We check each upload; you get a notification when it is approved
- Spend a free unlock on this document or any other, and keep it for good
- Shared under your public username, never your email
Then upload your notes from your profile.
Buy this document
$26 one-time payment
- All 26 pages of this document, yours to keep
- Download the PDF and read it any time, also offline
- No subscription and nothing to cancel
- Find it again any time under My Profile → Library
You log in or create a free account first, then pay securely.
Become a member
Unlock documents from the whole library, which keeps growing
- Choose any documents you like, up to your plan’s unlocks
- Documents you unlock stay yours, even if you cancel later
- Your unlocks start again with every renewal
- Secure checkout by Dodo Payments
You log in or create a free account first, then pay securely.
Compare the plansAlready a member, or bought this before? Log in to open it
About this document
- Pages
- 26 pages
- Price
- $26 one-time, yours to keep
- Membership
- Included in every plan
- Format
- Subject
- Computer Science, Statistics
This guide explains how to perform an independent t-test using SPSS. It covers the assumptions, setup, and interpretation of the results. It is useful for students who need to compare means between two unrelated groups on the same continuous, dependent variable.
What's inside
- Objectives of the independent t-test
- Assumptions for the independent t-test
- Background to the example
- Setup in SPSS
- Descriptives and visual presentation
- Testing assumptions
Who it is for: For students learning to use SPSS for statistical analysis. (Undergraduate)
Share with classmates: WhatsApp Telegram X LinkedIn Facebook
Summary
An independent t-test compares the means of two unrelated groups on a continuous variable. Students learn how to perform this test using SPSS, including setting up data, testing assumptions and interpreting results.
What is an independent t-test?
An independent t-test compares the means of two groups. It tests the equality of variances and provides descriptive statistics. The test has several assumptions, including normally distributed data and similar variances between groups.
Example of an independent t-test
The example investigates whether exercise or weight loss is more effective in lowering cholesterol levels. A random sample of overweight, inactive males was split into two groups: one for exercise and one for a calorie-controlled diet.
Setup and assumptions
Setting up the test in SPSS involves creating a grouping variable. Assumptions include normally distributed data and similar variances. If these assumptions are not met, a non-parametric test may be needed.
Testing procedure in SPSS
The procedure in SPSS involves using the 'Analyze' menu to compare means. The test checks for equal variances using Levene's Test. The results determine whether to use the equal or unequal variances column.
Key terms
- Independent variable
- The variable that divides the data into two groups.
- Dependent variable
- The continuous variable that is measured in both groups.
- Levene's test
- A test for the equality of variances between two groups.
- Normality
- The assumption that the data is approximately normally distributed.
- SPSS
- A software package used for statistical analysis.
- Descriptive statistics
- Statistics that summarise the main features of the data.
Questions this document helps with
- How do you set up an independent t-test in SPSS?
- What assumptions does an independent t-test have?
- How do you interpret the results of Levene's Test?
Summary written with AI from the document's text.
Ask the AI Teacher
Ask any question about this document or your course, and get a clear explanation.
Log in to ask Create a free account
Free accounts can ask 5 questions a day.