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### What is the interpretation of the p-value of 2.2e-16? [duplicate]

I am a beginner in using Wilcoxon test to get the p-value. After applying the test to my data, I got the p-value < 2.2e-16. Does that mean that the samples I have are significantly different from ...
80k views

### Interpreting p-value < 2.2e-16 in R [duplicate]

I am trying to check variable importance of this gender variable. I know if p value is less than 0.05 then its important otherwise not but what is it's giving p-value < 2.2e-16. I have tried other ...
4k views

### How much of your p-value do you report in a publication? [duplicate]

I know this will vary from journal to journal, but I'm working on my first publication and have had little guidance, so any personal experiences would be helpful to me. When you present your p-values ...
1k views

### about a p-value < 2.2e-16 [duplicate]

Although the question has been asked before, I hope that you do not mind if I am asking it again in our specific circumstances / context. I would appreciate having your advice on the following: in R, ...
5k views

### Understanding the significance of very small p-values [duplicate]

I have calculated p-values of two independent groups (each group contains 17 samples and each sample is 100 points). I used scipy's mann whitney u test. Further, I combined the p-values using Fisher's ...
1 vote
7k views

### How much sense does a p-value of <2e-16 make? [duplicate]

I ran a linear regression with one dependent and one explanatory variable. The data covers log returns of an index and log returns of a stock (natural logarithm). log return of stock = Alpha + Beta + ... 987 views

### Is a p-value of < 2.2e-16 in r the same as a p-value that is asymptotically 0? [duplicate]

I am getting a p-value of < 2.2e-16 for my coefficient in R, but I was wondering if I can say in my write up that it is asymptotically zero? Do these have the same meaning? What would I need to ...
1 vote
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### Upsides of reporting a lower or upper bound vs. reporting the actual value [duplicate]

I often see research papers reporting lower or upper bounds. E.g.: Patients treated with the splint regained mobility significantly more quickly (p less than 0.001) and preferred the splint to the ...
22 views

### p-values close to eps [duplicate]

After fitting a linear mixed effect model with lme, I run a posthoc analysis with glht and get the following results: ...
18 views

### P value significance in R [duplicate]

I understand that this p value: < 2e-16 is significant But is this p value: 1.4e-05 significant? I'm not sure how you can tell / what the 'e' means. Any help appreciated, thanks.
4k views

### Is the "hybrid" between Fisher and Neyman-Pearson approaches to statistical testing really an "incoherent mishmash"?

There exists a certain school of thought according to which the most widespread approach to statistical testing is a "hybrid" between two approaches: that of Fisher and that of Neyman-Pearson; these ...
24k views

### Sanity check: how low can a p-value go?

I am using a ranksum test to compare the median of two samples ($n=120000$) and have found that they are significantly different with: p = 1.12E-207. Should I be ...
7k views

### Is the exact value of a 'p-value' meaningless?

I had a discussion with a statistician back in 2009 where he stated that the exact value of a p-value is irrelevant: the only thing that is important is whether it is significant or not. I.e. one ...
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### Interpreting one- and two-tailed tests

How do you report results that give you a p-value of 0.08 for a two-tailed test and a p-value of 0.04 for a one-tailed test? Generalizing the issue, if you obtain a p-value between 0.05 and 0.9999 ...