Research Article

Fostering Achievement of Low-, Average-, and High-Achievers Students in Biology through Structured Cooperative Learning (STAD Method)

Table 5

Independent sample t-test for pre- and posttest of average-achiever students.

TestsVariablesGroupNMeanStd. deviationStd. error (mean)tdfSig. (2-tailed)

PretestKnowledgeExperimental168.631.7840.4460.844300.406
Control168.061.9820.496
UnderstandingExperimental166.881.6280.4071.578300.125
Control166.001.5060.376
ApplyingExperimental162.440.8920.2231.594300.121
Control163.061.2890.322
Total scoreExperimental1617.943.3360.8340.649300.522
Control1617.133.7390.935

PosttestKnowledgeExperimental1625.253.4540.8642.857300.008
Control1621.813.3510.838
UnderstandingExperimental1620.002.9440.7364.392300.001
Control1615.882.3350.584
ApplyingExperimental1614.132.5270.6322.745300.010
Control1611.692.4960.624
Total scoreExperimental1659.387.3201.8303.933300.001
Control1649.387.0601.765