Mean and Mean difference are the two key statistical measures used in the statistical analysis. Both are essential for meta-analysis as well. Mean and Mean difference are used for the interpretation of a large set of values into a single number which explains the heterogeneity and variation among the individual values. However, one of a common challenge in meta-analysis is the unavailability of this data (mean and standard deviation).

Q & A Forum

Publication Support

Q: What is Open Access (OA)?

Effect Size

Open Access is the term used for referencing for free, easy and legally accessible platforms of research articles and publication. OA content includes:

Journal publications
Conference articles
Data sets
Monographs
Theses and dissertations
Source code

Types of Open Access

Gold Open Access: Papers are easily and freely accessible through publication, often funded by article processing charges.
Green Open Access: Scholars post a model of their work in institutional sources for open access.
Hybrid Open Access: Some research papers in subscription journals are available for free and open access, often requiring researchers to pay cost.

Open Educational Resources:

Like Open Access, Open Educational Resources provide free and open accessibility to:

Online books and textbooks
Quizzes and test assessments
Teaching papers for students and educators

These resources increase education but serve a different option from Open Access research.

Q: What is Open Access (OA)?

Effect Size

Types of Open Access

Open Educational Resources:

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