290. Which of the following is not likely to be used to stratify a sample for a study investigating theuse of a computerised algebra program? A. Gender B. Ethnicity C. Socio-economic status D. Number of siblings in the home
290. Which of the following is not likely to be used to stratify a sample for a study investigating theuse of a computerised algebra program? A. Gender B. Ethnicity C. Socio-economic status D. Number of siblings in the home
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