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Language Testing in Asia

Table 9 Independent sample T test of teacher performance based on teaching experience for questionnaire categories

From: Assessing Iranian EFL teachers’ educational performance based on gender and years of teaching experience

   Levene’s test for equality of variances t test for equality of means
   F Sig. t df Sig. (2-tailed) Mean difference Std. error difference 95% confidence interval of the difference
   Lower Upper
Listening Equal variances assumed 0.02 0.89 −1.54 148.00 0.13 −0.68 0.44 −1.54 0.19
Equal variances not assumed    −1.56 145.51 0.12 −0.68 0.43 −1.53 0.18
Speaking Equal variances assumed 0.12 0.73 −1.10 148.00 0.28 −0.59 0.54 −1.67 0.48
Equal variances not assumed    −1.09 136.29 0.28 −0.59 0.55 −1.68 0.49
Reading Equal variances assumed 1.40 0.24 −1.49 148.00 0.14 −0.60 0.40 −1.40 0.20
Equal variances not assumed    −1.52 147.98 0.13 −0.60 0.39 −1.38 0.18
Writing Equal variances assumed 1.47 0.23 −2.69 148.00 0.01 −0.96 0.36 −1.67 −0.26
Equal variances not assumed    −2.74 147.78 0.01 −0.96 0.35 −1.66 −0.27
Vocabulary Equal variances assumed 0.02 0.89 −2.74 148.00 0.01 −1.36 0.50 −2.35 −0.38
Equal variances not assumed    −2.75 143.73 0.01 −1.36 0.50 −2.34 −0.38
Grammar Equal variances assumed 0.01 0.91 −1.80 148.00 0.08 −0.73 0.40 −1.52 0.07
Equal variances not assumed    −1.81 144.71 0.07 −0.73 0.40 −1.52 0.07
Designing and performing instruction Equal variances assumed 0.22 0.64 −2.32 148.00 0.02 −4.47 1.93 −8.28 −0.66
Equal variances not assumed    −2.33 143.63 0.02 −4.47 1.92 −8.27 −0.67
Assessment Equal variances assumed 0.94 0.33 −2.58 148.00 0.01 −2.01 0.78 −3.56 −0.47
Equal variances not assumed    −2.63 147.86 0.01 −2.01 0.76 −3.53 −0.50
Familiarity with students Equal variances assumed 0.21 0.65 −2.22 148.00 0.03 −1.45 0.65 −2.74 −0.16
Equal variances not assumed    −2.23 143.38 0.03 −1.45 0.65 −2.74 −0.16
Content knowledge Equal variances assumed 0.00 0.98 −1.84 148.00 0.07 −0.91 0.49 −1.88 0.07
Equal variances not assumed    −1.85 142.58 0.07 −0.91 0.49 −1.88 0.06
Classroom management Equal variances assumed 2.67 0.11 −1.05 148.00 0.29 −0.68 0.64 −1.95 0.59
Equal variances not assumed    −1.03 128.77 0.30 −0.68 0.66 −1.98 0.62
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