Tukey test

Significance of differences (5 = 0.05) between treatments within season dines) are denoted by different letters (Tukey-test)... 

Comparing all the groups (Tukey test) by pairs it was concluded that Brancanes, Lombador and Monte dos Mestres are comparable for Cu and Zn in soils and Fe in leaves of the rock rose plants. None of these groups is comparable with Neves Corvo in what Cu, Zn and Fe is concerned, both in soils and plants. This is due to the present mine exploitation of these metals and the dispersion of newly exploited materials in the surrounding area. 

Values with different superscripts in the same column are significantly different at P<0.05 (a,b), PC0.01 (a,c) and PC0.001 (a,d) determined by one-way ANOVA and Tukey test, nc = not calculated because the HPLC chromatogram revealed an undefined peak co-eluted with zeaxanthin that was also detectable in the canthaxanthin diet. 

Fig. 25.4 Epithelialisation rate achieved by in vitro cultured autologous sprayed keratinocytes, when applied over granulating full-thickness wound or Permacol M paste on days 0, 3, and 6 and measured on days 14, 17 and 21. Keratinocytes applied over Permacol paste not only survived, but showed a steady increase in the extent of epithelialisation, whereas epithelialisation remained extremely low in the wounds where cells were sprayed directly onto the wound bed. Error bars represent standard deviation, ANOVA (Tukey Test), statistical significance atp<0.0S...

All data were presented as mean SEM. The data were evaluated statistically for differences by one-way analysis of variance (ANOVA) followed by post hoc Tukey test for multiple comparisons, p < 0.05 was regarded as significant. Calculations were done using GraphPad Prism. 

Fig. 1. (—)-Iinalool attenuates mechanical allodynia induced by spinal nerve ligation in mice. (A and B) Mechanical allodynia developed and maintained over time following spinal nerve ligation (SNL). (A) A single dose of linalool (100 mg/kg s.c.) did not cause any significant changes compared to SNL and vehicle-treated animals. (B) Linalool administered daily for 7 days attenuated mechanical allodynia compared to SNL animals and SNL animals treated with the vehicle ( p < 0.001 vs vehicle ANOVA+Tukey test). Data are expressed as mean SEM of the value corresponding to 50% of pain threshold and are normalized to the basal value of each animal. Differences are evaluated using oneway analysis of variance (ANOVA), followed by post hoc Tukey multiple comparison tests, p < 0.05 was regarded as significant.

At this point, is it appropriate to address a reasonable question that you may be asking. Since each comparison in the Tukey test involves only two groups, and since we have already encountered a test that compares two groups perfectly adequately (the Mest), why not simply conduct three -tests, one for each pair of groups that need to be compared ... 

Statistical analysis of the data is performed by means of the Student s t-test for paired or unpaired data, or by means of analysis of variance followed by the Tukey test. Statistical analysis of nonparametric data is made by the chi square test. 

Table 5.8 Mean values of CFSV compounds in four Merlot, Teroldego, Marzemino and Chardonnay wines with different aging times. Indexes letters show the variety discrimination significance by Tukey-test.

When a compound was identified at least in most samples of a group, an analysis of variance with interaction by the General Linear Model procedure was performed to check the effect of salt content (lower and higher), sodium nitrite (presence, absence), added amino acids (control, cysteine and proline) and reaction time (7, 14 and 21 days). When significant and more than two levels in an effect, multiple comparison by the Tukey test were carried out to compare means. Statistic analyses were performed by means of the SPSS version 11.0. 

The Tukey test was used post-hoc to compare the individual groups consisting of a constant number of persons to each other (see Table 5.2) up to 5 persons, increasing the number of persons resulted in a significant decrease of the total time of project duration TTpd). Beyond 5 persons, no significant reduction of the total time of project duration can be attained (cf. Fig. 5.15). 

Tukey test compared with control values ( p<0.05 p<0.0l)... 

Data are expressed as mean s.e. Statistical analyses were performed by ANOVA followed by Tukey test compared with basal values ( p<0.05 p<0.01). 

All results are expressed in p-g/g on a dry weight basis. Tukey test was used to compare differences between the studied areas at the level P = 0.05. 

The studies carried out in 1992 of feathers of magpies from the Hgl and Hg2 areas did not confirm the presence of distinctly high amounts of mercury in the environment, probably due to its evaporation (Tukey test the Hgl area fsl area = Cu area > Hgl area). Large amounts of broken glass from mercury lamp factories were stored here at the end of 1980s. The factory in the Hgl area was completely closed in 1989. 

The Tukey Test of significance at. 05 level showed signifi-Ccuit differences in roasting conditions with respect to strength of odor cuid flavor but no significcuit differences with respect to... 

The Tukey Test is a rather conservative statistical calculation that demonstrates only severe differences and ignores subtle ones that might be considered significant by other means of calculation. In this method as shown in Teible 3 any two samples that are not directly connected by a bar are declared significantly different from each other. 

TUKEY TEST FOR SIGNIFICANT DIFFERENCES BETWEEN SAMPLES... 

Experimental outline completely random, split-plot in time (24 and 48 hours), 10 repetitions. Cultivation at Molasses (g/lOOmL of vinasse). Letters represent the groups formed by the Tukey test (5% confidence) the same letters = no significant variation. 

During April, 2003 the length of the fry from each experiment was measined and one-way ANOVA analysis was conducted on the three sets of data followed hy Tukey tests. Kolmogorov-Smimov tests were conducted on the hatch time data to determine if the distributions differed between the treatments. The P-value was adjusted to 0.03 using the bonferroni method to account for the multiple comparisons being made. Chi-square tests were conducted to determine a hatch time bias for the period of dark. 

Figure 4. Effect of postnatal exposure to 2,5-dimethylpyrazine on the onset of first estrus in female mice differing in body weight and season of birth. 2,5-Dimethylpyrazine (treatment) versus water (control) conditions F(11,202) = 20.55, p<0.0005 Tukey test set at p<0.02 for comparison of all means. Reproduced from Biol. Re-prod, (Jemiolo Novotny, 1993) with permission of the Society for the Study of Reproduction.

In the third experiment, using ethanethiol, dimethyl disulfide, and dimethyl sulfide compounds simultaneously was not as effective as live mice in luring brown tree snakes into traps (F2 33 = 0.015 Figure 2). We captured one snake in 12 trapnights. This capture rate was 16% as effective as live mice, with which we captured six snakes (50% capture rate Tukey test, P = 0.055). 

The Siegel-Tukey test pools the two data samples with identification, ranks them, applies paired alternate ranking to generate rank sums, and allows for the sample sizes, to provide a test statistic that can be evaluated using the same tables as for the Mann-Whitney U-test. 

These results now provide the full numerical answer to the original research question. As always, the numerical results need to be interpreted in words in the context of the specific study. This interpretation requires combining the information from the Tukey test with the group means calculated earlier ... 

The Tukey test that was employed in our hypothetical example is structured to take a conservative approach in an ingenious manner. Keeping aU other considerations and variables constant, as the number of treatment groups increases (i.e., as the number of comparisons being made increases), the size of the test statistic T increases. Since the difference between any two groups means has to exceed the... 

Figure 2. Tukey test for the averaged resistivity measured at 6 different segments on the colon of rabbits.

Regression analysis at different points of time t leads to damage appearance function Significance tests (e.g. Mann-Whitney U-Test Siegel-Tukey-Test, Fisher-Test) and confidence... 

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