According to the Tukey HSD results, 3rd vs 4th q -stat was 1.08, p-value was 0.857 and insignificant. 3rd vs. 5th q-stat was 4.35, p-value was 0.017, less the 0.05, 3rd vs. 6th q-stat was 5.22, p-value was 0.003, less than 0.01, 4th vs. 5th q-stat was 2.85, p-value was 0.196, insignificant. 4th vs. 6th q-stat was 3.59, p-value was 0.067, insignificant. 5th vs. 6th q statistic was 0.79, p-value was 0.899. Finish this paragraph using this information: In addition to the ANOVA, the Tukey test compares means between all possible pairs of groups. In this case, there were six comparisons: third vs. fourth, third vs. fifth, third vs. sixth, fourth vs. fifth, fourth vs. sixth, and fifth vs. sixth grades