Using the hsd test qcrit = 3.65
HSD testis used to check differences among sample way for significance. The Tukey's HSD assessments all pairwise variations at the same time as controlling the probability of making one or greater type I errors.
A Tukey-Kramer test lets us check the null speculation of no distinction between the population approach for all pairs of businesses. The Tukey-Kramer check (also known as a Tukey sincere importance test, or Tukey HSD), is carried out in R inside the function.
solution
given;
using HSD test, the degree of freedom = 16
and α=0. 05
groups = 3
Hence, Qcrit = 3.65 {using HSD table}
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