WebPower

Zhiyong Zhang
Jun 6, 2022
  • 1.8 MB

    File Size

  • Android 4.4+

    Android OS

About WebPower

Statistical power analysis for simple and complex models

The importance of conducting a statistical power analysis at the beginning of a study is universally accepted (e.g., Cohen, 1988; Hedges & Rhoads, 2009). Without careful planning, a study can easily fail to detect an existing effect by chance. The increasing complexity of education research driven by education practice poses great challenges on existing methods of statistical power analysis. For example, education research often involves longitudinal and multilevel designs as well as advanced techniques such as structural equation and multilevel models. Furthermore, practical data in education are often not normally distributed and are incomplete. Regarding the nature of real data, Micceri (1989) reported that among 440 large-sample achievement and psychometric measures taken from journal articles, research projects, and tests, all were significantly non-normally distributed. In impact evaluations funded by the National Center for Educational Evaluation and Regional Assistance (NCEE), student achievement outcomes are often missing for 10-20 percent (e.g., Puma, 2009). Without careful consideration of the complexity of study designs and the impact of non-normal data and missing data, the validity of education research can be harmed.

With the support from the grant program on Statistical and Research Methodology in Education from the Institute of Education Sciences of U.S. Department of Education, WebPower is developed to conduct both simple and complex statistical power analysis online. This Android app makes the use of the online software easy to use on phone and tablets.

Show MoreShow Less

What's new in the latest 1.0

Last updated on 2022-06-06
First release of WebPower, Jan 2018

WebPower APK Information

Latest Version
1.0
Category
Tools
Android OS
Android 4.4+
File Size
1.8 MB
Developer
Zhiyong Zhang
Safe & Fast APK Downloads on APKPure
APKPure uses signature verification to ensure virus-free WebPower APK downloads for you.

Old Versions of WebPower

Super Fast and Safe Downloading via APKPure App

One-click to install XAPK/APK files on Android!

Download APKPure