Differences

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--- t-test [2025/10/08 03:34] – [모집단의 평균과 표준편차를 알고 있을 때] hkimscil
+++ t-test [2025/12/02 23:07] (current) – hkimscil
@@ Line 6: / Line 6: @@
 \begin{eqnarray}
-z\;\;\;\text{or}\;\;\;t = \frac{\overline{X}-\mu}{\sigma_{\overline{X}} }  \\
+z\;\;\;\text{or}\;\;\;t & = & \frac{\overline{X}-\mu}{\sigma_{\overline{X}} }  \\
-t = \frac{\overline{X}-\mu}{s_{\overline{X}}  } \\
+t & = & \frac{\overline{X}-\mu}{s_{\overline{X}}  } \\
-t = \frac{(\overline{X_a}-\overline{X_b})-(\mu_a-\mu_b)}{\sigma_{diff}} \\
+t & = & \frac{(\overline{X_a}-\overline{X_b})-(\mu_a-\mu_b)}{\sigma_{diff}} \\
-t = \frac{\overline{D}-0}{s_{ \overline{D} }} = \frac {\overline{D}}{ \frac{s_D}{\sqrt{N}} }
+t & = & \frac{\overline{D}-0}{s_{ \overline{D} }} = \frac {\overline{D}}{ \frac{s_D}{\sqrt{N}} }
 \end{eqnarray}
 --