ERIC - Search Results

Descriptor

Evaluation Methods	2
Research Design	2
Control Groups	1
Data Analysis	1
Error of Measurement	1
Experimental Groups	1
Hypothesis Testing	1
Mathematical Models	1
Measurement Techniques	1
Multivariate Analysis	1
Nonparametric Statistics	1
Research Problems	1
Sample Size	1
Sampling	1
Simulation	1
Statistical Analysis	1
Statistical Studies	1
Testing	1
More ▼

Source

Evaluation Review

Author

Algina, James	2
Olejnik, Stephen F.	2

Publication Type

Reports - Research	2
Journal Articles	1
Speeches/Meeting Papers	1

Education Level

Audience

Researchers

Location

Laws, Policies, & Programs

Assessments and Surveys

What Works Clearinghouse Rating

Showing all 2 results Save | Export

Multiple Group Time-Series Design: An Analysis of Data.

Peer reviewed

Algina, James; Olejnik, Stephen F. – Evaluation Review, 1982

A method is presented for analyzing data collected in a multiple group time-series design. This consists of testing linear hypotheses about the experimental and control group-means. Both a multivariate and a univariate procedure are described. (Author/GK)

Descriptors: Control Groups, Data Analysis, Evaluation Methods, Experimental Groups

Tests of Variance Equality When Distributions Differ in Form, Scale and Location.

Download full text

Olejnik, Stephen F.; Algina, James – 1986

Sampling distributions for ten tests for comparing population variances in a two group design were generated for several combinations of equal and unequal sample sizes, population means, and group variances when distributional forms differed. The ten procedures included: (1) O'Brien's (OB); (2) O'Brien's with adjusted degrees of freedom; (3)…

Descriptors: Error of Measurement, Evaluation Methods, Measurement Techniques, Nonparametric Statistics