T-Test: What It Is With Multiple Formulas and When to Use Them

Read on to learn more about what a t-test is, the different formulas used, and when to apply each type to compare means and ...
Scientific Research Publishing

Pallant, J. (2020). SPSS Survival Manual: A Step-by-Step Guide to Data Analysis Using IBM SPSS (7th ed.). McGraw-Hill Education.

ABSTRACT: This study aimed to evaluate the impact of Learning Management System (LMS) integration on student performance and engagement at the University of Cape Coast (UCC) while comparing its ...
Scientific Research Publishing

Kwak, S.G. and Park, S. (2019) Normality Test in Clinical Research. Journal of Rheumatic Diseases, 26, 5-11.

ABSTRACT: Healthcare decisions are based on scientific evidence obtained from medical studies by gathering data and analyzing it to obtain the best results. When analyzing data, biostatistics is a ...
IEEE

A comparison of normality tests using SPSS, SAS and MINITAB: An application to Health Related Quality of Life data

Abstract: Numerous studies have been conducted on the power of various tests of normality such as Shapiro-Wilk (SW), Kolmogorov-Smirnov (KS), Lilliefors (LF) and AndersonDarling (AD) tests. This paper ...
Scientific American

How the Guinness Brewery Invented the Most Important Statistical Method in Science

“One Guinness, please!” a customer says to a barkeep, who flips a branded pint glass and catches it under the tap. The barkeep begins a multistep pour process lasting precisely 119.5 seconds, which, ...

What Is Analysis of Variance (ANOVA)?

Learn what analysis of variance (ANOVA) is, how it works, and when to use it. See how it helps compare means across multiple data groups in statistics and research.
Frontiers

Is coefficient alpha robust to non-normal data?

1 Department of Educational Psychology and Special Education, Southern Illinois University, Carbondale, IL, USA 2 Department of Educational Leadership, Western Illinois University, Macomb, IL, USA ...