放送大学(院)「心理・教育統計法特論」第4章
対応のあるt検定
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シャピロ・ウィルクの正規性検定
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Shapiro-Wilk normality test
data: A月
W = 0.9288, p-value = 0.2615
Shapiro-Wilk normality test
data: B月
W = 0.8909, p-value = 0.06928
対応のある場合のt検定
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Paired t-test
data: A月 and B月
t = 3.851, df = 14, p-value = 0.001764
alternative hypothesis: true difference in means is not equal to 0
95 percent confidence interval:
0.7384383 2.5948950
sample estimates:
mean of the differences
1.666667