All Questions
Tagged with nonparametric statistical-significance
110
questions
0
votes
0
answers
22
views
Statistical Significance Testing for Nested Cross-Validation in ML Experiment
I am currently working on an ML experiment where I use a nested 5-cross validation procedure and obtain a NDCG@10 scores for each test user. I am comparing 6 different ML algorithms and have data for ...
- 81.4k
4
votes
1
answer
2k
views
Friedman's test to identify best of multiple classifiers on multiple domains
I have several classifiers $f_i\ (i=1, \cdots, N)$ and calculated performance measures on multiple domains $(D)$ for each. Thus, there are $N \times D$ values.
I want to find out (increasing ...
CommunityBot
- 1
1
vote
0
answers
57
views
Welch ANOVA for Comparisons of Elevation & altered Sediment Accretion of Sea Ecosystems: Large DEM with no normal distribution & heterogeneity
I am investigating the elevation characteristics and sediment accretion effects of two distinct ecosystems within the Wadden Sea, impacted by the bioinvasion of one species (ecosystem one) and ...
- 329k
0
votes
0
answers
39
views
Non parametric tests for 2 way anova and linear model? [duplicate]
My dissertation is due very soon and I have only just realised a large mistake in my work. I misread the normality test I used, which actually showed non normal data- but I still have homogeneity of ...
- 1
0
votes
0
answers
10
views
How to compare peak location and tail length of two different distributions?
I have the distributions of the fraction of people in each income bracket in a town in 1990 and 2020. The total sample size is the same in both, and assume that the incomes have been adjusted to ...
2
votes
2
answers
498
views
Is there a robust test for stochastic dominance between two random variables?
I am trying to compare the errors from two statistical models in order to give evidence to one being "better" in terms of lower prediction error than the other.
To formalize this, I thought that a ...
- 31
32
votes
3
answers
5k
views
Why does the Kolmogorov-Smirnov test work?
In reading about the 2-sample KS test, I understand exactly what it is doing but I don't understand why it works.
In other words, I can follow all the steps to compute the empirical distribution ...
- 30.3k
1
vote
0
answers
48
views
Doubt on non-parametric ANCOVA with two groups and pre-post scores and pre scores (baseline) as covariate
I have used a non parametric ANCOVA to analyze scores of a questionnaire (BSCS) with factors: Type of intervention(A and B) and timepoint (pre- and post) as well as baseline (same distribution as pre-)...
- 81.4k
0
votes
0
answers
28
views
What test should I perform given repeated measures of one subject in three time periods?
I have data that represents the measurements of the concentration of PM particles in the air at different times (every hour of every day from 2018 onwards), and I am supposed to test whether the rules ...
- 101
0
votes
0
answers
61
views
Statistical significance test on 2-sample percentages
In the context of my thesis, i have created a corpus in order to compare the use of "z" vs "s" in specific words like organisation, organised, recognise, authorise etc.
I have ...
1
vote
1
answer
183
views
What do these Wilcoxon values tell me?
I did a pre and post-test with a small number of students ($n=12$).These values came after a science intervention that took $4$ weeks. I used a Wilcoxon test for 2 related samples as there was not a ...
- 58.6k
1
vote
2
answers
351
views
SIgnificant ANOVA but not significant post hoc ... what can I do?
I am analyzing some IHC data on the density of cells in two brain regions(factor 1) in two closely related species(factor 2). My data is composed of an n of 6 for each species and is not normally ...
- 125k
2
votes
1
answer
80
views
What non-parametric test for multivariate binary data should I use?
I have two different groups of participants ("g" and "b") answering the same set of questions. Group "g" answered questions in the same order. Group "b" ...
- 795
0
votes
1
answer
56
views
Non-Parametric Test for Regression Significance
I have created a plot of the regression slope of sea surface temperatures (x) and an atmospheric variable (y). Although, I need to test the statistical significance of these trends using a non-...
- 411
2
votes
3
answers
478
views
When is a hypothesis test appropriate? [closed]
For example, when would a hypothesis test bed used?
- 1