All Questions
39
questions
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18
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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 ...
- 1
0
votes
1
answer
58
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Pearson & Spearman correlation coefficient in their extreme
I am working right now in R with correlation coefficients. I know that we can achieve approximately a Pearson coefficient r=0 and Spearman p=1, because Pearson is sensitive to outliers. However, I was ...
- 121
0
votes
2
answers
115
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I have a moderate to high correlation and a p-value that is non-significant. Do I still reject the whole hypothesis?
I have a correlation of 0.777 but only a p-value of 0.069 (not significant) on my Pearson's test. My sample size was of 54. Should my hypothesis still be rejected even if there is a correlation? Is ...
1
vote
1
answer
136
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Cross-lagged Pearson correlation in R
I have a dataset where I have two recordings (sessions) of two different variables.
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- 299
1
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0
answers
374
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How to [properly] correlate environmental variables to NMDS ordination axes?
Data + setup:
I've constructed an NMDS ordination from a Bray-Curtis distance matrix calculated from relativized abundances (basal areas) of trees. Samples include ~40 forested plots that have been ...
- 2,325
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0
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555
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How to address missing values in Pearson Correlation?
I am working on Pearson Correlations and for each individual I have at least one missing data point. When I create the correlation matrix in R, I get NAs for each individual where a variable is ...
- 1
0
votes
1
answer
107
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Following Pearson correlation analysis how to compare subsets of the significant correlations
How can I statistically compare subsets of the significant correlations produced from Pearson correlation analysis (r-value, p-value) and Benjamini-Hochberg multiple testing adjustment (q-value)?
To ...
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0
votes
0
answers
280
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Positive Pearson but negative Spearman and Kendall
I tried all 3 correlation tests, and got the following results:
Pearson's test: 0.04132983
Spearman's test: -0.009821993
Kendall's test: -0.02230622
I don't understand how the values can be so vastly ...
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5
votes
1
answer
639
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Why the pearson correlation p-value doesn't fully correspond to CI in R?
Calculating Pearson correlation using the cor.test() function in R, I found that the p-value does not necessarily correspond to the CI:
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- 6,211
4
votes
1
answer
499
views
How t is calculated for pearson cor test?
I am trying to understand how the t-statistic is calculated by the cor.test() function in R.
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- 542
0
votes
1
answer
1k
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Explanation of Pearson correlation changing with the degrees of freedom
I did Pearson correlation and I got this results:
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- 17
1
vote
0
answers
356
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Obtaining p-value from bootstrapped Pearson's correlation using R
I am trying to carry out a bootstrapped Pearson's correlation using R software. I have 13 observations and originally I obtained: ...
2
votes
1
answer
310
views
Testing how well an unweighted linear regression explains variation compared to a weighted linear regression
I have a weighted and an unweighted linear regression (same dataset) and need a measure of how well one model can explain variation relative to the other (i.e. are the R-squared values significantly ...
- 271
3
votes
2
answers
2k
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is it correct to use a Pearson correlation test on transformed data (log, boxcox)
I am trying to study the correlation between 2 variables non-normally distributed. These are the values (n. 134) of measured level of a substance (bisphenol A) in urine in mothers and relative ...
- 229
0
votes
1
answer
134
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Can I use Pearson's or Spearman's on a Likert-style survey?
I am doing a follow up survey to a previous study. It has to do with scientific news stories, seeing if exposure to the news story changes a negative behavior of theirs. For example, exposure to a ...
