Transcript Document
5-8 What If We Have More Than Two Samples? 𝐿𝑆𝐷 = 𝑡𝛼 2,𝑛−𝑟 𝑀𝑆𝐸 × (1 𝑛𝑖 +1 = 𝑡0.025,(24−4) 6.51 × 𝑛𝑗 ) 1 6 +1 =(2.086)(1.473) = 3.073 𝐻𝑆𝐷 = 𝑞𝑛−𝑟,𝑟 𝑀𝑆𝐸 (1 𝑛𝑖 + 1 𝑛𝑗 )/2 =𝑞20,4 6.51(1 6 + 1 6)/2 =(3.96)(1.042) = 4.125 6 5-8 What If We Have More Than Two Samples? Cut-off value for Fisher’s LSD = 3.071 Cut-off value for Tukey’s HSD = 4.124 20 15 10 5 22.2 17 15.7 10 7* 5.7* - 1.3 - 10 12.2* 15.7 6.5* 17 5.2* - 22.2 - * Significantly different.