Premium
AN INVESTIGATION OF THE CONTEXT EFFECT IN MATRIX SAMPLING 1
Author(s) -
SIROTNIK KEN
Publication year - 1970
Publication title -
journal of educational measurement
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.917
H-Index - 47
eISSN - 1745-3984
pISSN - 0022-0655
DOI - 10.1111/j.1745-3984.1970.tb00717.x
Subject(s) - statistics , context (archaeology) , sampling (signal processing) , sample (material) , mathematics , population , matrix (chemical analysis) , psychology , context effect , variance (accounting) , test (biology) , econometrics , demography , computer science , geography , paleontology , chemistry , geometry , archaeology , filter (signal processing) , chromatography , accounting , word (group theory) , business , computer vision , biology , materials science , sociology , composite material
Practical use of the matrix sampling (i.e. item sampling) technique requires the assumption that an examinee's response to an item is independent of the context in which the item occurs. This assumption was tested experimentally by comparing the responses of examinees to a population of items with the responses of examinees to item samples. Matrix sampling mean and variance estimates for verbal, quantitative, and attitude tests were used as dependent variables to test for differences between the “context” and “out‐of‐context” groups. The estimates obtained from both treatment groups were also compared with actual population values. No significant differences were found between treatments on matrix sample parameter estimates for any of the three types of tests.