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ERIC Number: ED012265
Record Type: RIE
Publication Date: 1966-Nov
Pages: 8
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
PREJUDGING THE SUCCESS OF AN EXPERIMENTAL PROJECT.
ARMSTRONG, CHARLES M.; WOHLFERD, GERALD H.
JOINTLY CONSIDERING THE FACTORS OF SAMPLE SIZE (N-10 TO N-1000) AND THE STANDARD DEVIATION OF THE CRITERION MEASURE (SD-1 TO SD-25), A TABLE SHOWS THE DIFFERENCE BETWEEN TREATMENTS NEEDED FOR STATISTICAL SIGNIFICANCE AT THE .05 LEVEL. THUS, IF THE EDUCATIONAL RESEARCHER HAS APPROPRIATE INFORMATION ON PAST PERFORMANCE, HE CAN CONSULT THE TABLE TO DETERMINE THE SAMPLE SIZE NEEDED TO OBTAIN A DIFFERENCE OF A GIVEN ANTICIPATED SIZE AND ALSO THE TIME OR LENGTH OF PROJECT NECESSARY TO ACHIEVE A DIFFERENCE OF THE DESIRED SIZE. THIS ARTICLE WAS PUBLISHED IN THE "ARGR JOURNAL," VOLUME 3, NUMBER 1, NOVEMBER 1966. (LC)
Publication Type: N/A
Education Level: N/A
Audience: N/A
Language: N/A
Sponsor: N/A
Authoring Institution: N/A
Identifiers: N/A