NotesFAQContact Us
Collection
Advanced
Search Tips
Publication Date
In 20250
Since 20240
Since 2021 (last 5 years)0
Since 2016 (last 10 years)0
Since 2006 (last 20 years)1
Author
Beaton, Albert E.1
Chromy, James R.1
Publication Type
Numerical/Quantitative Data1
Reports - Evaluative1
Education Level
Audience
Location
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Showing one result Save | Export
Beaton, Albert E.; Chromy, James R. – American Institutes for Research, 2007
Fundamental to statistical analyses is the comparison of means of one variable from two or more populations. Population samples may be constructed (i.e., experimental and control groups), or they may be natural groupings (i.e., students at a particular grade in different years). If the populations are similar, the mean comparisons are…
Descriptors: Control Groups, Academic Achievement, Statistical Analysis, Comparative Analysis