Z-test(Z-°ËÁ¤)´Â ±Í¹«°¡¼³¿¡¼ Ç¥ÁØÁ¤±ÔºÐÆ÷¸¦ µû¸£´Â Z-Åë°è·®¸¦ ±â¹ÝÀ¸·Î ÇÏ´Â °¡¼³°ËÁ¤ÀÌ´Ù.
°¡Àå °£´ÜÇÑ Z-test(Z-°ËÁ¤)Àº 1-Sample Z-test(1-Ç¥º» Z-°ËÁ¤)·Î, ºÐ»êÀ» ÀÌ¹Ì ¾Ë°í ÀÖ´Â Á¤±Ô
ºÐÆ÷ ¸ðÁý´ÜÀÇ Æò±ÕÀ» °ËÁ¤ÇÒ ¼ö ÀÖ´Ù.
¿¹¸¦ µé¾î, ¾î¶² ÀǾàÇ°¾÷üÀÇ »ý»ê °ü¸®ÀÚ°¡ 5g Â¥¸® ¿¬°í¿¡ ÃæÀü¾Á¸µµÇ´Â ¿¬°íÀÇ ¾çÀÇ Æò±Õ ¹«°Ô°¡
¸ñÇ¥°ª 5g°ú °°ÀºÁö ¿©ºÎ¸¦ È®ÀÎÇÏ·Á°í ÇÑ´Ù. °ú°Å µ¥ÀÌÅ͸¦ ÅëÇØ ¿¬°í ÃæÀü¾Á¸µ Àåºñ´Â Ç¥ÁØÆíÂ÷°¡
0.2g À̶ó´Â °ÍÀ» ¾Ë°í ÀÖ´Ù.
ÀÌ °æ¿ì¿¡ 1-Sample Z-test (1-Ç¥º» Z-°ËÁ¤)¸¦ ½ÇÇàÇϸé
One-Sample Z: Values
Test of ¥ì = 5 vs ¡Á 5
The assumed standard deviation = 0.2
Variable N Mean StDev SE Mean 95% CI Z P
Values 9 4.7889 0.2472 0.0667 (4.6582, 4.9196) -3.17 0.002
¶ÇÇÑ Z-test(Z-°ËÁ¤)¸¦ »ç¿ëÇÏ¿© ÇÁ·Îºø ºÐ¼®°ú ·ÎÁö½ºÆ½ ȸ±ÍºÐ¼®ÀÇ ¿¹Ãøº¯¼ö°¡ ¹ÝÀÀº¯¼ö¿¡
À¯ÀÇÇÑ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö È®ÀÎÇÒ ¼ö ÀÖ´Ù. ±Í¹«°¡¼³Àº ¿¹Ãøº¯¼ö°¡ À¯ÀÇÇÏÁö ¾Ê´Ù´Â °ÍÀÌ´Ù.
Poisson Rate test(Æ÷¾Æ¼Û ºñÀ² °ËÁ¤)¿¡¼ »ùÇÃÀÇ °¹¼ö¿Í »ç°Ç¹ß»ý Ƚ¼ö°¡ ¸¹Àº °æ¿ì¿¡
Á¤±Ô¼ºÃßÁ¤(Normal approximation)À» Àû¿ëÇÏ¿© Z-test(Z-°ËÁ¤)¸¦ ¼öÇàÇÒ ¼ö ÀÖ´Ù.
¡á Exact Method¸¦ Àû¿ëÇÑ °á°ú
Test and CI for One-Sample Poisson Rate: Defective A
Test of rate = 20 vs rate ¡Á 20
Total Rate of Exact
Variable Occurrences N Occurrence 95% CI P-Value
Defective A 713 40 17.8250 (16.5405, 19.1828) 0.002
¡á Normal approximation Method¸¦ Àû¿ëÇÑ °á°ú
Test and CI for One-Sample Poisson Rate: Defective A
Test of rate = 20 vs rate ¡Á 20
Total Rate of
Variable Occurrences N Occurrence 95% CI Z-Value P-Value
Defective A 713 40 17.8250 (16.5166, 19.1334) -3.08 0.002