# pearson

1. ### Nonparametric alternative to point-biserial correlation coefficient? - Which? t-test or Mann Whitney?

A. I know from the net that for a design with one binary variable and a second variable that is continuous but is NOT normally distributed, I can use BOTH the point-biserial correlation (which is basically the parametric Pearson correlation formula) as well as the Rank Biserial Correlation...
2. ### Need help to correctly bootstrap confidence interval for correlation of 50 y-values against 50 averages from autocorrelated subsets of 2000 x-values

I am helping out with some plots for a paper: simple X versus Y plots, and would like to provide some stats to improve the paper. My statistics knowledge is rusty and I am an R-noob with only a few weeks of Tidyverse under my belt, so I would appreciate some input. Am I on the right track? The...
3. ### How to create a Pearson Correlation and others with this data?

Hello everyone.. I am struggling to create a Pearson correlation with this data below: My goal here is very simple, identify correlations between each module and the severity number. (Its related to Defects) I tried Pearson correlation but did not work out well. Can someone give me a hint of...
4. ### pvalues vs bheta koefisien vs pearson for features importance

Hello, I still confuse, the different concepts for feature importances. For example: I have 6 variabel. 5 variable was predictor, and 1 variable was target (which predicted). Suppose: X1, X2, X3, X4, X5 and Y 1. Find most important features by do pearson manually (X1 and Y, X2 and Y, X3 and Y...
5. ### University project help (correlation)

Hello dear stat-folk! I'm currently in the process of re-writing my project due to a failed exam in it. In this regard i'm having trouble figuring out whether i can even use statistics (and how) to describe a theory i have towards a possible correlation. In this part of the project i am...
6. ### Correlation analysis: spearman or pearson

Hi, We are conducting research on the relationship between self esteem and aggression. We have aggression scores and self esteem scores and we want to find out if there is a significant difference in the relationship by gender. We have ran a pearson's correlation for the relationship for the...
7. ### Correlation Question

I have to do a correlation analysis for a paper and I don't have much experience in practical work. My data looks like this: The two variables have a linear (but not monotonic?) correlation but I think it is not normally distributed (last picture) and I wanted to ask if I can still do a...
8. ### Correlation in questionnaire data

Hello, I'd really appreciate if someone can help me with a particular problem, concerning the approach I should take in statistically analysing the results of questionnaire data concerning intensity of use of social media, on the one hand, and social relationships on the other. The...
9. ### Is there a Correlation metric for Categorical vs Numerical features?

I've been searching for some time for a correlation metric analogous to the Pearson correlation value for numerical vs numerical features, or Cramér's V for categorical vs categorical features, but this time for categorical vs numerical features. This is my toy data example in Python, where...
10. ### What does it mean if my Pearson r correlation is not significant?

Hi there, So ive got a sample size of 400 Uni students, measuring a correlation between stress and exercise levels in minutes, and I received a non-significant results. Can anybody help explain why this is the case? Im having trouble interpreting it.
11. ### Should I use Pearson or Spearman correlation?

I have to know whether two variables are correlated or not in a sample. None of them are normally distributed, so I assumed that I should run Spearman's correlation, which gave me a correlation coefficient of 0.392 (p<0.05, and Pearson's correlation was equally p<0.05). My problem is that now I...
12. ### Can I use a pearson correlation with repeated measures?

I have measured 5 different behavioural responses of birds to birdsong playbacks from a speaker (e.g. how long they took to sing back to the playback song, how long they took to approach the speaker etc..). Each bird was measured twice for each behaviour. Now I would like to know if...
13. ### Choosing appropriate statistics (please)

Hi, I have an issue (mostly being clueless and trying to achieve more than I can), I am writing a page in Ruby on Rails for which I need to calculate the probability of two events being correlated (basically the likelihood of a trigger being the cause of a symptom, or since correlation doesn't...
14. ### Interpreting the data — Correlation coefficient and significance level

Hello, I need to fix the problem choosing and interpreting the correct statistical test for my data. I have data from (a) Minnesota Job Satisfaction Questionnaire short form (20 questions, answers from 1 (=very dissatisfied) to 5 (=very satisfied)) and (b) from Social Readjustment Rating...
15. ### Pearson VS Spearman — Choosing and interpreting the test

Hello, I need to fix the problem choosing and interpreting the correct statistical test for my data. I have data from (a) Minnesota Job Satisfaction Questionnaire short form (20 questions, answers from 1 (=very dissatisfied) to 5 (=very satisfied)) and (b) from Social Readjustment Rating...
16. ### Permutation correlation with one non-normal variable

Hi, I am trying to assess the relationship between a relatively normally distributed variable (brain volume) and a strongly right-skewed behavioral measures, which cannot be transformed to normality. I assume a linear relationship between the two variables. My plan is to calculate the...
17. ### bootstrapping correlations Spearman vs. Pearson

I would like to calculate simple correlations. Since my sample size is quite small and data are not normally distributed I thought about Spearman’s correlations. Then I read about bootstrapping as a distribution free method and, considering my small sample size, I decided to use it with...
18. ### Large differences in Pearson vs Spearman

Dear all, My name is Mark and I am currently writing my thesis for a Master in Economics. I examine whether year to year changes in certain industry variables have an effect on the likelihood of CFO termination (0/1 variable). I have six X-variables, that are calculated as the absolute pro...
19. ### assocstats() output

Hello, When I type > assocstats(mytable) I get the output: X^2 df P(> X^2) Likelihood Ratio 0.085525 1 0.76995 Pearson 0.084803 1 0.77089 Please can someone explain me what that means? (I only know that df is...
20. ### Excel formula for the inverse Pearson IV distribution?

Hello Everyone, What is the excel formula to generate the inverse Pearson IV distribution? I have mean, standard deviation, skew and kurtosis and I plan to generate random outputs given those stats. How do I write the formula? My question is very direct and simple. I've looked everywhere...