pearson

  1. K

    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...
  2. T

    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...
  3. L

    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...
  4. S

    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...
  5. H

    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...
  6. N

    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.
  7. H

    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...
  8. S

    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...
  9. H

    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...
  10. A

    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...
  11. A

    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...
  12. N

    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...
  13. M

    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...
  14. M

    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...
  15. Z

    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...
  16. D

    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...
  17. K

    Autocorrelation of discrete time series

    I am currently planning on calculating the autocorrelation for various lags given a time series. However, my elements of the time series are "discrete" and abstract classes; i.e., no integers. For example, my series could look like: class A, class B, class A, class A ... Of course I...
  18. C

    can you do a chi sq w/ 2 different n sizes?

    can you do a chi sq w/ 2 different n sizes? I have an experiment with 2 groups (pre medicine and post medicine). Group 1: 400 subjects Group 2: 332. When Put the data in (via 1 and 0s) into my SPSS I keep getting really weird answers. How can I accommodate for the 68 subject difference...
  19. B

    Pearson product Correlation

    If I am looking for a relationship between several different variables (personality characteristic, attachment, eating pathology) does it matter that they have all been measured on different scales? For example - some give a score out of 20, some of the sub scales give scores out of 5 and so...
  20. K

    statistics help please

    I'm having trouble with a few questions in my text book and was hoping you could help...I need to know this for my exam and I just need some help figuring these out...the first one is 1. A two-factor research study has two levels of factor A and two levels of factor B with n = 10...