How to Calculate Sample Size in Structural Equation Modelling (SEM) - Inverse Square Root Method
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- Опубликовано: 21 авг 2024
- Learn how to Perform Sample Size Calculation using Inverse Square Root Method.
To Understand the Sampling Process
• Understanding the #Sam...
#SampleSizeCalculation #InverseSquareRootMethod #Sampling #PLSSEM #SampleSize #CalculateSampleSize #PLSSEMSampleSize #AcademicResearch #SocialSciencesResearch #ResearchWithFawad
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Salam, I finished my work hamdollah, with the help of your videos and explanations, thank you so much, Professor.
Thanks. I am glad you liked it and it helped in getting the work done. Do remember in your dua.
Thank you for making the method easily to be understood. Thanks again.
You're very welcome!
Thank you!
Thanks for watching
Muchas gracias por este gran aporte!
Placer. Me alegro de que te haya gustado.
Thank you sir
Pleasure. I am glad you liked it
Thank you for the insightful video. For PLS-MGA (4 groups) the min. sample size of 155 cases, considering the inverse sq.root, should be for each group or for all? For the moment I have 446 cases (a min. 105 case for each group). 🙏
This is fine. For each group if you have over 30 responses, it is appropriate.
Sir, this method gives the total sample size required or the sample size for each group. I f i have three groups to analyse, then what sample size to be taken for each?
For MGA please refer to
Multigroup Analysis using SmartPLS: Step-by-Step Guidelines for Business Research
Dr I heard that we have to multiply the number of indicators we have by 5 to 10 times to get the recommended sample size; if we have 25 indicators, we, for example, multiply them by 8 and get 200; this sample will be considered acceptable. Is this method suitable? We need a simple and also correct method to follow.
Yes you can calculate that way as well.
prof. how will i come to know the minimum path coefficient, before the collection of actual data?
Base the path coefficient on the pilot study.
Dear Sir, i have taken 300 sample and will apply SEM. i think it's most necessary in research to give the reference and citation for this technique. I didn't add the reference and citation. If you have citation and reference regarding 300 sample size then please send me.
Sample size of 300 or any other number is a subjective assessment. It is recommended that for Behavioural Research the sample size is over 200. Refer to Roscoe (1975).
Roscoe, A. M., Lang, D., & Sheth, J. N. (1975). Follow-up Methods, Questionnaire Length, and Market Differences in Mail Surveys: In this experimental test, a telephone reminder produced the best response rate and questionnaire length had no effect on rate of return. Journal of Marketing, 39(2), 20-27.
HI, thanks for your help. I have just 25 sample. how can I calculate path coefficient to be sure if it is between 0.41 - 0.5 ? should I just assume it? or do I need an estimate from their model?
You should run the model but the sample size is too low.
Hy Dr, is the inverse square root method applicable for purposive sampling?
Yes
@@researchwithfawad tqvm Prof.
I can't see the references clearly 🥺
Please refer to the book titled
Partial Least Squares Structural Equation Modeling (PLS-SEM) Using R: A Workbook
Asalamualikum Sir
If u could please clarify a bit about effect size, what is it actually?
Normally the path coefficient is significant at .20 in Social Sciences Research. So if you use .20 to calculate sample size, there is a probability that with a sample of 155 you can expect significant results.
Based on what i can choose my significance level %? Why would i choose 5% and not 1% or not 10%?
If you are in social sciences we normally keep it at 5%.
Another question based on what the path coefficient is determined? Should it be calculated? @Research With Fawad
@@researchwithfawad thanks
How to choose the significance and min path coefficient..do we just assume
For social sciences, Sig is 0.05 whereas normally you will get significant results at 0.20. You can even try 0.10 as some scholars have suggested it.
Dear sir, can you tell me where can i view the value of p_min of my model in smart pls 4?
p min?
Yes sir, the value of the denominator( |Pmin| ) in the formula you showed….how can i get its value in pls sem 4 software ? you said its the minimum path coefficient / effect size in the video so i am confused
can we calculate sample size from PLS?
No. The video shows the formula on how to calculate it for SEM based analysis.
sir..how can I identify the path coefficient..
Normally a path coefficient around 0.20 results in significant impact. Take 0.20
Can you help me with the reference where path coefficient of 0.2 is taken as standard
Please refer to
Hair Jr, J. F., Hult, G. T. M., Ringle, C. M., Sarstedt, M., Danks, N. P., & Ray, S. (2021). Partial least squares structural equation modeling (PLS-SEM) using R: A workbook (p. 197). Springer Nature.
Hi Sir, thanks for your explanation and the video. But, i can't get the standard path coefficient is taken 0.2 on social reseacrh on that's book. i just get assumption if use path coefficient is 0.2. Thanks before @@researchwithfawad