Questions tagged [pearson-r]
The Pearson product-moment correlation coefficient is a measure of the linear relationship between two variables $X$ and $Y$, giving a value between +1 and −1.
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Pearson chi square and correlation
My data are ordinal
Pearson chi squared test value is 4.664
And asymp sig is 0.97 so the data are independent
However pearson's R =-0.309
And the approx sig=0.037
Can they be independent and ...
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Which correlation test to use
I'm working with datasets on economic inequality and crime rates at the county level to produce correlation matrices. My economic inequality data has several variables, which are percentage of county ...
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Interpretation of ICC and Pearson's r correlation
I am calculating intraclass correlation coefficient (ICC) values for response values at two different timepoints. I am also correlating the response values at the different timepoints using Pearson's $...
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Should one account for the known variance of fixed X when estimating its relationship with random Y?
In Aldrich (2005), and specifically in sections 10 and 11, the author describes the sufficient statistic for the parameter $\beta$ in the simple regression of random $Y$ on fixed $X$, with a bivariate ...
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What is the minimum Pearson sample correlation given a perfect sample rank correlation with no ties? [duplicate]
Let $(X, Y)$ be a random sample of finite size $n$ from a bivariate continuous distribution with unknown parameters $(\rho_{XY},\mu_X,\mu_Y,\sigma_X,\sigma_Y)$. Assume observed values are real numbers ...
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Correlation of Group of Questions in Likert Scale answers
let's say that we have a response survey data frame with 6 columns.Each column is a question.Q1,Q2,Q3,...,Q6. The responses are from 1 to 5. 1 is translated to Very Bad,4 to Bad,3 to neutral,2 to good,...
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Test for multicollinearity with binary and continuous independent variables
I have a question concerning multicollinearity: I have several independent variables. Some are binary and some continuous. The dependent variable is binary. Can I use the Pearson correlations to test ...
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How does knowing the sign of the population correlation affect the sufficiency of its statistic?
As noted here, the sufficient statistic for the correlation under bivariate normality is Pearson's $r$, the maximum likelihood estimate of $\rho$. I suppose, however, this does not guarantee that $r$ ...
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Why can't fit I fit a multivariate regression (OPLS) model when my variables are univariately (Pearson/Spearman) correlated?
I have a dataset of 950 lipids (X) and want to see if any are correlated with cognitive function (Y). When I try to fit an opls regression model, it errors and says that "No model was built ...
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Normality of $z$ transformation without preliminary assumption
Assuming data $X_1,...,X_n, Y_1,...,Y_n$ we have Pearson correlation $r=\frac{Cov(X,Y)}{\sigma_X\sigma_Y}$. Fisher's $z$ transform is then $$z=0.5\log\left(\frac{1+r}{1-r}\right)=\tanh^{-1}(r)$$
If $(...
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Doing an independent study as a high schooler but can't seem to figure out the values that need to be used to get pearson's correlation coefficient
Here's the database, it's a rather small one: https://www.theadgalternative.com/world_cup_data.html
I dont understand what my N, X, and Y values would be since nothing is really quantitative.
I'm ...
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Cronbach alpha - descriptive statistics
I researched thinking styles based on Sternberg's Investment Theory. I used a TSI questionnaire that measures preferences in thinking styles. The problem is that I got low scores of Cronbach's alpha ...
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How to check linear independence of categorical features with a numerical target?
Suppose I am doing linear regression on a dataset. My dataset contains columns f1, f2 ,f3 ,f4 , f5 , target
. Features (independent variables) are the column names starting with "f" and my ...
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Pearson correlation p-values plot which method better adjusted my p-values BH or BY? help me understand
I'm working on DEG dataset and I've done Pearson correlation to prepare my dataset for downstream analysis (co-expression network), so this isn't an exploration phase. When I do pearson on R using ...
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What is a good journal for submitting my article on a conjecture in theoretical statistics, re: ancillary complement for correlation?
I'm working on a draft of a statistics article, and I'd like to plan for the journal where I'll ultimately submit. My problem is, the article topic is somewhat abstract—it's a conjecture in ...