What do I do next if non-parametric levene's test is significant?

03 March 2018 0 4K Report

I conducted ANOVA for some variables, each of which had gruops. Soe of the variables had significant values (p < .05).

I therefore conducted a non-parametric Levene's test which verified the equality in only few of the variables (no significant value).

However, some variables still have significant values, even after the levene's test!!!

What can I do about getting ALL variables to have homogeneity of variances?

Badges
Science method

More Umar Faruq Muhammad's questions See All

What can I do about my ANOVA - Robust Tests of Equality of Means?

I conducted ANOVA on my data with one Independent Variable (IV3 - Age of Respondent) and 6 Dependent Variables (DVs). The IV3 had 4 groups (age ranges), with the last group having only 1...

02 March 2018 4,833 0 View

I computed pearson's r for 29 continuos variables and got correlations between only 15 permutations within the matrix - with r being > .4, & p<.000?

I computed pearson's r for 29 continuos variables and got positive correlations between only 15 permutations (out of 406) within the matrix. they all have r > .4, & p

01 February 2018 330 0 View

Must i have independent and dependent variables before carrying out regression analysis?

Must i have independent and dependent variables before carrying out regression analysis? Or, if I have my survey variables from my questionnaire, I can carry out regression analysis without...

01 February 2018 5,493 0 View

Please, what are the various thresholds for the value of different statistical coefficients in spss?

11 December 2017 9,752 0 View

What are the acceptable thresholds or ranges for the various SPSS Descriptives??

Please, after I analyze my data through the descriptives of SPSS, and got my MEAN, STANDARD DEVIATION, KURTOSIS, & SKEWNESS, can you tell me how to interpret the output results? Especially,...

11 December 2017 258 0 View

What are the different ways of categorising the dynamics of an urban area?

In terms of an urban area, apart from 'formal' and 'informal' (like formal and informal housing or labour), what other ways are there to categorise the dynamics in it? Please can I get clear...

01 February 2017 7,776 0 View

What do I do if my data distribution is not Normal?

11 December 2016 2,124 33 View

What are the spss tests and their assumptions?

what are the spss tests and their assumptions?

11 December 2016 7,967 0 View

Please what is the best way to analyze charrette session data?

I have conducted a charrette for my research, as a methodology. I have recorded the proceedings. How do i analyze the data?

10 November 2016 6,229 4 View

What ranges of population should i give as options in my questionnaire?

I want to include a question in my questionnaire - WHAT IS THE POPULATION IN YOUR FAMILY HOUSE? What standard ranges are there for me to give as options to choose from? Or should i leave it as an...

09 October 2016 7,417 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

How to manually calculate p value in ANOVA? what is the equation or formula for it?

03 March 2021 4,928 5 View

Mixed ANOVA - help?

I'm currently working on a piece which asks to conduct an ANOVA - looking at the effect of sporting group (2 levels), and exercise trials (two trials with six levels). I've computed this all...

27 February 2021 9,626 4 View

How to Interpret Partial Eta Squared Numbers For a Repeated Measures Anova?

I have obtained Partial Eta Squared Numbers through Two-Way Mixed Anova Analysis. My results for different constructs are: .105, .135, .038, .068, .061 respectively. I wanted to know, whether...

24 February 2021 7,122 1 View

Can we proceed to perform Two-way Mixed-ANOVA despite normality violations?

While testing assumptions, Shapiro-Wilk Test failed. However, I proceeded with the analysis and the interaction effect was significant. During our course- lectures, it was mentioned that Anova...

24 February 2021 228 3 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View

Three-way robust ANOVA in R?

I am trying to conduct a three-way robust ANOVA in R using the WRS2 package as: t3way(Stem ~ Species*Temperature*Salinity, data = tutto) and there is an error saying : Error in if...

22 February 2021 1,674 8 View

How to assure whether a regression tree overfit or not by seeing bias-variance value of the model?

Lets consider a regression tree in which variance is 1.1065*e-10 and bias is 2.962e-13. Also the model RMSE on training set is 1.5e-5 and on training set is 1.2950e-5. Is the model is overfit or...

22 February 2021 7,755 2 View

Interpretation of Goodman - Kruskal Gamma squared?

Dear colleages, Eta squared is dominantly used in reflecting the explaining power the same manner as a squared partial correlation coefficient (R2p ) from multiple linear regression: as the...

22 February 2021 7,801 3 View

How to compare means of continuous data with zero-inflation and skew?

I have two groups (unpaired) of plant biomass measurements and want to know whether there is a test that can be used to determine statistical significance where assumptions are not violated. The...

18 February 2021 1,258 4 View