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Table 10 independent t-test analyses of students’ scientific argumentation skills (n = 155)

From: Developing scientific argumentation strategies using revised argument-driven inquiry (rADI) in science classrooms in Thailand

  Levene’s Test for Equality of Variances t-test for Equality of Means
F Sig. t df Sig. (2-tailed) Mean Difference SD 95% Confidence Interval of the Difference
Lower Upper
Pretest sci. argumentation skills Equal variances assumed .669 .415 .584 153 .560 .292 .500 −.696 1.279
Equal variances not assumed    .579 143.300 .563 .292 .504 −.704 1.288
Posttest sci. argumentation skills Equal variances assumed 1.122 .291 9.191 153 .000 4.077 .444 3.201 4.954
Equal variances not assumed    9.236 152.168 .000 4.077 .441 3.205 4.949