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Analysis of Data
Data for each subject included the following: Teacher
School
Score on Pupil Questionnaire pretest Score on Pupil Questionnaire posttest Score on Student Interest Observation Instrument pretest Groups B1 and C
Score on Student Interest Observation Instrument posttest Groups A, B1 and B2
The T Test for Related Measures was used to compare results on the Pupil Questionnaire pre- and posttests. Mean scores, differences between means, standard deviations and t scores were calculated for intact classes. Class means were computed rather than student means to allow students to answer the questionnaire anonymously.
Two statistical analyses were used for the Student Interest Observation Instrument; A Univariate F Test from a Discriminant Function and a T Test for Related Measures. The univariate F statistic allowed for the examination of the nature of differences between two groups on the basis of individual variables. Because one comparison in the