Pretest Kelas Kontrol Pretest Kelas Eksperimen Posttest Kelas Kontrol

B. Uji normalitas sebaran data

1. Pretest Kelas Kontrol

Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent uji normalitas pretest kontrol 33 100.0 .0 33 100.0 Descriptives Statistic Std. Error uji normalitas pretest kontrol Mean 19.1212 .38376 95 Confidence Interval for Mean Lower Bound 18.3395 Upper Bound 19.9029 5 Trimmed Mean 19.1128 Median 19.0000 Variance 4.860 Std. Deviation 2.20451 Minimum 14.00 Maximum 24.00 Range 10.00 Interquartile Range 2.50 Skewness .153 .409 Kurtosis .161 .798 Tests of Normality Kolmogorov-Smirnov a Shapiro-Wilk Statistic df Sig. Statistic df Sig. uji normalitas pretest kontrol .133 33 .148 .972 33 .530 a. Lilliefors Significance Correction

2. Pretest Kelas Eksperimen

Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent uji normalitas pretest eksperimen 33 100.0 .0 33 100.0 Descriptives Statistic Std. Error uji normalitas pretest eksperimen Mean 19.0909 .48337 95 Confidence Interval for Mean Lower Bound 18.1063 Upper Bound 20.0755 5 Trimmed Mean 19.1566 Median 19.0000 Variance 7.710 Std. Deviation 2.77673 Minimum 14.00 Maximum 23.00 Range 9.00 Interquartile Range 4.00 Skewness -.380 .409 Kurtosis -.800 .798 Tests of Normality Kolmogorov-Smirnov a Shapiro-Wilk Statistic df Sig. Statistic df Sig. uji normalitas pretest eksperimen .118 33 .200 .939 33 .065 a. Lilliefors Significance Correction

3. Posttest Kelas Kontrol

Case Processing Summary Cases Valid Missing Total N Percent N Percent N Percent uji normalitas posttest kontrol 33 100.0 .0 33 100.0 Descriptives Statistic Std. Error uji normalitas posttest kontrol Mean 20.9394 .35871 95 Confidence Interval for Mean Lower Bound 20.2087 Upper Bound 21.6701 5 Trimmed Mean 20.9882 Median 21.0000 Variance 4.246 Std. Deviation 2.06063 Minimum 17.00 Maximum 24.00 Range 7.00 Interquartile Range 3.50 Skewness -.370 .409 Kurtosis -.816 .798 Tests of Normality Kolmogorov-Smirnov a Shapiro-Wilk Statistic df Sig. Statistic df Sig. uji normalitas posttest kontrol .148 33 .064 .937 33 .057 a. Lilliefors Significance Correction

4. Posttest Kelas Eksperimen