Skip to content

act.org,actprofile.org,act.org,actstudent.org,act.alertline.com,services.actstudent.org,career4.successfactors.com,engage.act.org,discoveractaspire.org,qc.vantage.com,myworkkeys.act.org,twitter.com,facebook.com,youtube.com,plus.google.com,linkedin.com,preview.act.org,workreadycommunities.org,pearson.com,instagram.com,actaspire.org,run2.careerready101.com,run2.keytrain.com,leadershipblog.act.org,my.act.org

Start Your Journey

Students & Parents
K-12
Workforce
Higher Ed
Blogs
Open Search Form
MyACT

ACT Research
All Services and Resources
All Reports
Studies and Partnerships
- Studies and Partnerships
About ACT Research

Search

Search site...

Close Search

Other ACT Services and Products

Sep 12, 2014

An Empirical Investigation of the Accuracy of a Step-Up Method for Estimating Test Score Conditional Variances

ACT research report series: 96-4 ...

Size: 1.4MB | Pages: 32

Download

Students & Parents
K-12 Professionals
Higher Education
Workforce
International

About ACT
Careers
Events
Solutions & Services
State & Federal Programs

ACT Blogs
Research
For the Media
Sign In
Contact

© by ACT Education Corp. All rights reserved. Terms of Use

Instgram
Tik Tok
Twitter
Facebook
LinkedIn
YouTube

Privacy Policy|
Vendors|
Report Cheating|
Ethics|
Accessibility|

This action will open a new window. Do you want to proceed?

Welcome to ACT

If you are accessing this site from outside the United States, Puerto Rico, or U.S. Territories, please proceed to the non-U.S. version of our website.

Close Go