How to conduct Independent samples t-test in SPSS (Analysis+Effect size+APA reporting)
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- Опубликовано: 22 авг 2024
- This video demonstrates how to perform an Independent Samples t-test in SPSS. The video first describes the context of Independent samples t-test, followed by necessary assumptions check and demonstration of the t-test. It also shows how to calculate the effect size for Independent sample t-test and provides templates for reporting results according to APA style 6th edition. You can download the practice data set and writing template (link below).
It is a parametric test to compare sample means of a continuous variable for two independent groups.
What do we need?
One categorical, independent variable with two levels (e.g., sex: male/female).
One continuous, dependent variable (e.g., Internet addiction as measured by IAT).
Assumptions
(i) Scale of measurement-Continuous (dependent variable); (ii) Independence of observation; (iii) Random Sampling; (iv) Normality; and (v) Homogeneity of variance
#SPSS #Independent_Samples_t_test #হাতেকলমে_SPSS
Azharul Islam
Assistant Professor
University of Dhaka
SPSS Course Content
1. The research process: An Overview • The Research Process: ...
2. Preparing a research tool/survey questionnaire • How to prepare a resea...
3. Codebook and coding for SPSS • How to prepare a codeb...
4. Levels of Measurement/ Scales of Measurement • Scales of Measurement:...
5. Creating data file and entering data in SPSS • Data entry in SPSS: St...
6. Data cleaning in SPSS • How to clean data (err...
7. How to split file and select cases in SPSS • Select cases in SPSS w...
8. How to split a file in SPSS www.youtube.co....
9. Transforming data: Compute and Recode in SPSS • Transforming data: Com...
10. Data analysis in SPSS: An overview • Research data analyses...
11. Descriptive statistics in SPSS • Research data analyses...
12. How to conduct Independent Samples t-test in SPSS (Context+Analysis+APA Reporting) • How to conduct Indepen...
13. How to conduct One-Sample t-test in SPSS (Context+Analysis+Effect size+ APA Reporting) • How to conduct One Sam...
14. How to conduct Paired Samples t-test in SPSS (Context+Analysis+Effect Size+APA Reporting) • How to conduct Paired ...
15. How to do Chi-Square Goodness of Fit test in SPSS (Context+Analysis+APA Reporting) • How to conduct Chi-squ...
16. How to conduct a Chi-Square test of Independence in SPSS (Context+Analysis+APA Reporting) • How to run Chi-square ...
Exploring relationships between variables in SPSS
17. Bivariate correlation in SPSS • Pearson's Correlation ...
18. Partial and semi-partial correlation in SPSS • How to calculate and r...
19. Spearman’s rho/Kendall’s Tau-B in SPSS • How to calculate Spear...
20. Standard multiple regression in SPSS • Multiple Linear Regres...
21. Hierarchical multiple regression in SPSS • Hierarchical Multiple ...
22. Binary logistic regression in SPSS • Binary Logistic Regres...
Comparing more than two groups in SPSS
23. One-way between-groups ANOVA in SPSS • One-way between-groups...
24. One-way ANOVA for repeated measures in SPSS • One-way Repeated Measu...
25. Two-way ANOVA for independent groups in SPSS • Two-way between groups...
26. Two-way ANOVA for repeated measures in SPSS • Two-way repeated-measu...
27. Mixed-method ANOVA in SPSS • Mixed-Design ANOVA in ...
Examining the underlying structure or reliability of measures
28. Exploratory Factor Analyses in SPSS • Exploratory Factor Ana...
29. Internal consistency in SPSS • Calculating and Interp...
30. Interrater reliability in SPSS
31. The intra-class correlation coefficient in SPSS
32. Test-retest reliability in SPSS
My books.........................................
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Practice data file tinyurl.com/y6...
Effect size calculator tinyurl.com/va...
APA style writing template tinyurl.com/uu...
References (books) .........................................
1. Field, A. (2017). Discovering Statistics Using IBM SPSS Statistics (5 ed.). California: SAGE Publications Ltd.
2. Pallant, J. (2010). SPSS Survival Manual: A step by step guide to data analysis using SPSS: Allen & Unwin Australia.
3. Allen, P., Bennett, K., & Heritage, B. (2018). SPSS Statistics: A Practical Guide: Cengage Learning Australia.
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Outstanding presentation and the supporting materials, Big big thanks for your kind contribution. Please carry on for the nation. Thanks again honorable Professor
I am glad that you find my tutorials useful. Yes, I will continue to contribute with new videos on various research and mental health-related topics. Best wishes!
Sir, it helped me a lot, I thought when n>30 it is always going for the Z test. Now it is clear to me that an adequate sample size always prefers the T-test.
Very helpful content. Thanks for sharing.
very useful resource
Sir, your videos are incredible, I learnt a lot from your video. I have some confusions regarding common language effect size. I would be grateful to you, If u explain how to calculate common language. Thanks
I have given an Excel file in the download section. Use this file to calculate common language effect size.
great lecture.. thank you
You are most welcome
Assalamualaikum Sir. Thank you so much for creating this course, may Allah bless you with more knowledge! I wanted to know, how do we decide which statistical test to use for any data set? What are the deciding factors? Also, can you recommend one book for statistics (beginners) for research in health science? I am lost in all the mountains of information provided by the internet!
Your research objectives and nature of data will determine the choice of tests. I recommended three books in the video description.
Background music disturbing.
Brilliant
Thank you.
Video lecture file and the given SPSS files are not the same. Fix that kindly.
Thanks for spotting this mistake. Fixed it. Check it out.
i have one confusion. Earlier male were 0 and female were 1, but then male 1 and female 2?
SEM upor video chai , sir
The CL effect size indicates that the chance that for a randomly selected pair of individuals the score of a person from Group 1 is higher than the score of a person from group 2 is 79%.
- Sir, How can i measure this "79%". Thank you
Assalamualykum Sir! I have some confusion on the implication of Hedges’s gs = 1.0434. The Common Language (CL) effect size. Would you please explain?
What is the difference between Levene’s test for equality of variances significance level and T test for equality means significance level?
Good question. Levene's test for equality of variances indicates if there is any significant difference between variances of two groups' scores. It is an assumption to meet while conducting an independent sample t-test, although SPSS gives alternative output if this assumption is violated. T-test for equality of means is actually the final t-test result which determines if the two group means are statistically different or not.
Via
Ei video tar report writing template ta khuje pelam na
drive.google.com/file/d/12Rl-kN4Jt1ZxqMWEcgm_O6tccwthefse/view
এই প্রজেক্টের রিপোর্ট দেওয়া যাবে?
P values niye acta alada video koren plz
noted
Where we get the data, where the video description
drive.google.com/file/d/1fM11IVg6vZFmJ0g8N1tdhuGtQWI3Klbm/view
Yes I have got it.Thanks
Sir data jodi normality assumption ke violated kore tahole ki independent sample t test possible. Non normal data gulo ke ki normal data te convert kora possible???
Normality assumption violate korle ekhetre male and female ar difference ta ki onno kono test dia check kora jabe???
Possible
Sir what will be the appropriate statistical test when we will deal with likert scale survey result?
It depends on the research question and types of data. See this video ruclips.net/video/TQny-HajIRQ/видео.html
Thanks Sir. Sir I am doing research on likert scale based survey in SPSS where I have taken satisfaction (ordinal in nature) as dependent variable for ordinal logistic regression. Here, I have more than 4 independent variable which are ordinal in nature and I have taken all these variable as factor. Am I following the right way?
I want to know the differences between 1 tailed/ 2 tailed test.
Should you choose the one-tailed or two-tailed test, depends on the research question or hypotheses. If, for example, your hypothesis is, the male would score higher than female, you need to choose a one-tailed test. For the current case, the null hypothesis was there was no difference between male and female; therefore, we selected a two-tailed test. For further explanation with the underlying statistical procedure, please consult any basic statistics book.
Sir,
we know that if continuous variable are not normally distributed than data should be presented as median (IQR).But when we do normality test with factor list(govt, private, NGO) we see individual normality results.
Example : continuous variable (dialysis charge)- not distrusted - present it as median(IQR)
Dialysis charge by categories-
Govt(12)- distributed - present it as mean/SD
Private(72)- not distributed -median (IQR)
NGO(15)-not distibuted-median (IQR)
I show my descriptive statistics result like this. Isn’t it right?
Sir, have there any mandatory sample size for cat. variable to do normality test?
As my data is not normally distributed so I do non parametric kruskal wallis test with dunn's comparison for post hoc analysis to see significant Between dialysis charge vs cat.
and also to see significant Between cat. like govt vs private, P vs ngo, G vs NGO.
Have there any mandatory criteria for sample size of K-W/ pairwise comparison test?
Total size: 99
Govt: 12
Private: 72
NGO: 15
#PlZ_Help
Thank you for your question. First, it is better to present the descriptive statistics in a uniform format, e.g., all in IQR. Second, there are no hard rules for sample size in each group for Kruskal Wallis ANOVA. However, it is good to have a nearly equal sample size in each group.
@@AzharulIslam sir I have another qus.
In chi square test if more than 20% (32%, 62%) cells have expected value less than 5. then which test is appropriate to see Association between 2 catagorical variable. Table 3*3 or 8*3
স্যার both kolmogorov - smirnov আর shiapiro- wilk e significant হতে হবে??নাকি একদিকে significant হলেই হবে??স্যার pls reply its urgent for me..🙏
ekta holei use korte parben.
@@AzharulIslam anek anek dhannobad sir
Could you give thesis paper that are written following to independent sample t test and pearson chi square. How can i communicate with you
You will find the writing sample of independent sample t-test and Chi-square test in the video description under each video.
Sir , I want to know Normal curve, one tail, two tail, confident level etc.
These topics usually are covered in statistics classes. You can read any basic statistics textbook.
Sir, effect size konta nibo independent sample t test er jonno?? Cohen d bah aro onk gulai to ase? Konta effective? R kontar effect scale koto?
Please read the article I provided in the description.
রেজাল্ট ইন্ট্রপেট করার যে টেক্সট দিলেন তা ব্যাবহার করলে কি প্লাগারিজম হবে?
Ektu edit kore use kora valo. Normally statistical part gulo ekoi rokom hoy. So don't worry.
দাদা কি ভাবে প্রতিটি item অনুযায়ী analysis করতে হয় শিক্ষা গবেষণার ক্ষেত্রে একটু দেখাবেন....
Use each item as one variable.
Assalamu Alaikum sir.. I have computed means of my both scales ( Interpersonal Reactivity index and Self-Compassion) and then did t test separately.. Is my way of doing analyses right sir?
Your choice of test will depend on your research objective. For example, if your objective is to see whether men and women differ in self-compassion, you would do independent sample t-test. If you want to see whether self-compassion of men changes between pre and post counseling, you would do paired sample t-test.
If the sample size is larger than 100, can I run the t test in that case?
Sir please suggest me, can I run the test in that case?
Khubi Valo, ami apnar sathe communicate kore chi. and SPSS ta sikhta chai . apni jodi apnar phone no. ta dan.
Assalamu Alaikum sir.. I have coded all individual items of my both scales and make them variable as well Do I also need to make a variable of total scores for my both scale..?
Total scores of scales are mainly used for different analyses.
@@AzharulIslam Okay sir.. I understand.. When you select just two items for analyses, I got confused about the items that I should select...
কিছুই বুঝলাম না🙄
Practice data file ta download kora jacche na, kindly update this.
Updated. Kindly check again. Thanks for the notification.