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0answers
24 views

Non parametric tests for relation/association between variable

What could be an appropriate test for checking whether there exist any relationship between Net Promoter Score ( Categorical in nature with 0 meaning detractor, 1 meaning Neutral, 2 meaning Promter ) ...
0
votes
1answer
460 views

kruskal wallis post hoc test for negative and positive values

I have 10 means and I want to test if there is a significant difference between the groups. The means are composed of cost values that can be negative and positive. I read here the kruskal test can ...
1
vote
2answers
656 views

Comparing the means of 6 groups, binary dependent variable

I accomplished a field experiment which results in six differently treated groups (including one control group, each n = 300). Due to randomization all groups are expected to be equal in terms of ...
0
votes
0answers
50 views

Ranking data sets by means etc. (unequal sample size and variance)

I want to rank several lists of data by their tendency to be larger or their capacity to be larger when extrapolated. Is there a way to do this effectively?
1
vote
0answers
607 views

Difference in mean between two periods in a time serie? What test to use?

I have a dataset of multiple experiments measured each hour, for 56 hours. Now I want to identify if there is a significant difference in the mean value between the time periods 1-2 hour and 50-57 ...
5
votes
1answer
11k views

Are pairwise Wilcoxon tests a valid non-parametric alternative to Tukey's HSD test?

I am trying to identify significant differences between groups from normal and non-normal distributions. When the distribution is normal the workflow is pretty straightforward: ANOVA and after that a ...
0
votes
1answer
2k views

Paired t-test, Kruskal-Wallis rank sum test and chisquare test. Which test should I choose?

I observed moth oviposition in orchard for 4 moths (400 clusters per week). The moth oviposit on leaf and apple. I want to compare the means between oviposit on leaf and apple. I suppose to use paired ...
4
votes
1answer
4k views

Appropriateness of K-S test and Kruskal-Wallis for assessing medical data set

I am analyzing some stats for a paper I am writing. I have statistics help available through my faculty but am not there for a couple of months so hoping you can help out. n = 463, 2 patient groups( &...