Panel Data Analysis

27/07/2025

The Krejcie-Morgan Table is a simple tool to help researchers determine the right sample size based on their total population. It’s widely used in academic studies because it removes the need for complex formulas. The table is based on a 95% confidence level and a 5% margin of error, standards in most research. For example, if your population is 1,000, the table suggests a sample size of 278. This makes it easier for researchers to plan reliable surveys or studies. The table was introduced by Krejcie and Morgan in 1970.

Krejcie & Morgan Sample Size Calculator Enter Population Size (N): Calculate Sample Size Recommended Sample Size (n): 📘 About T...

17/10/2023

https://techxplore.com/news/2023-10-technique-based-18th-century-mathematics-simpler.html

Researchers from the University of Jyväskylä were able to simplify the most popular technique of artificial intelligence, deep learning, using 18th-century mathematics. They also found that classical training algorithms that date back 50 years work better than the more recently popular techniques....

22/05/2023

The newest SmartPLS 4 release introduces a game-changing addition: CB-SEM (like in IBM® SPSS® Amos). https://www.smartpls.com/downloads Thereby, you can now estimate structural equation models using the covariance-based structural equation modeling approach (CB-SEM). You can also use this new feature to run a confirmatory factor analysis (CFA).

To get started easily and compare SmartPLS results with other software, there is a CB-SEM sample project that can be installed directly in the SmartPLS software. It contains the following models, which can be estimated immediately and provide results:
- Byrne textbook model for personal accomplishment
- Hair textbook model on job satisfaction and staying intentions
- Diamantopoupls-Siguaw textbook model on job satisfaction and customer focus
- Kline textbook model for job satisfaction
- a model with a formative measurement model from the MISQ article by Diamantopoulos

In addition outputting relevant results for model assessment and reporting, SmartPLS also includes bootstrapping for CB-SEM.

Finally, the CB-SEM world now has a software with a user-friendly graphical interface, which PLS-SEM users have been appreciating and loving for years. For a seamless transition, you can also import your old Amos projects into SmartPLS 4.

Download SmartPLS 4 now, and experience the power of the SmartPLS 4 user interface and discover a new world of doing your CB-SEM analyses.

01/05/2023

'Statistically impossible' heat extremes are here: Study identifies the regions most at risk
https://phys.org/news/2023-04-statistically-impossible-extremes-regions.html

28/01/2023

When should data scientists try a new technique? | MIT News | Massachusetts Institute of Technology
https://news.mit.edu/2023/data-scientists-try-new-technique-c-value-0127

01/12/2022

Partial Least Squares Structural Equation Modeling (PLS-SEM) Using R

https://link.springer.com/book/10.1007/978-3-030-80519-7

02/08/2021

Statistical mediation is nothing more than variance partitioning without the validity of prior assumptions.

23/07/2021

https://www.bbc.com/news/uk-england-tyne-57940909

The copy of How to Lie with Statistics is decades past its return date of 25 November 1958.

11/03/2021

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4205511/

Medical educators attempt to create reliable and valid tests and questionnaires in order to enhance the accuracy of their assessment and evaluations. Validity and reliability are two fundamental elements in the evaluation of a measurement instrument. Instruments can be conventional knowledge, skill....

08/03/2021

https://webpower.psychstat.org/models/kurtosis/

22/02/2021

https://www.bloomberg.com/news/articles/2021-02-19/covid-pandemic-how-youyang-gu-used-ai-and-data-to-make-most-accurate-prediction

In the contest over who could make the most accurate coronavirus forecast, it was global institutions vs. a guy living with his parents in Santa Clara.

15/02/2021

https://towardsdatascience.com/excel-vs-python-how-to-do-common-data-analysis-tasks-54f1bdd6dfaa?gi=35e510ab8ac9

A comparative approach using Excel and Python