Linked Questions

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614 views

What does “more extreme” mean when talking about p-values? [duplicate]

As far as I understand it, the p-value is the probability of obtaining the observed data or more "extreme" values under the null hypotesis, concluding that if this probability is small enough the null ...
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1answer
289 views

Generating i.i.d samples in MATLAB: large p-values [duplicate]

I'm trying to generate i.i.d samples from two uniformly distributed random variables in MATLAB. However, when I correlate the two sets of samples, I find that the correlation is almost zero, but the p-...
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2answers
253 views

Are p values obtained from t-tests? [duplicate]

Question: Are p-values determined from t-tests? What is the relationship between a p-value and a t-value? It states in this article here, the instructions to finding a t-value: How to Calculate T: ...
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1answer
271 views

Why reject Null Hypothesis when p value< alpha? [duplicate]

As per statistical literature, there seems to be this understanding that given a p value less than alpha, we are to reject the null hypothesis. The way I am interpreting this is that is the critical ...
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1answer
227 views

What does P>0.05; 0.025 < P ≤ 0.05 ; Yes, 0.01 < P ≤ 0.025 and, P ≤ 0.01 mean ? hypothesis testing p-values [duplicate]

I'm learning for my exam which is tomorrow and in the practice exam there are a lot of questions where you can choose between those p-values, but what do they mean? an example question A test is ...
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0answers
195 views

Anderson-Darling critical value in R [duplicate]

I am using R and i need to do an Anderson-Darling test on my data. I am using the adk package ( http://cran.r-project.org/web/packages/adk/adk.pdf ). How do I calculate the critical value for a given ...
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2answers
67 views

Should you reject $H_0$ at the 0.10 level? [duplicate]

If the p-value is greater than 0.900, should you reject $H_0$ at the 0.10 level?"
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1answer
166 views

How to understand what a high p value indicates [duplicate]

I am reading a research article and trying to interpret and report the results. The article is comparing gabapentin and estrogen for the treatment of hot flashes. There was no difference between ...
0
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1answer
50 views

p value in a testing [duplicate]

Why does a test return the p value? I am looking at the Diebold-Mariano-Test (DM Test): https://github.com/johntwk/Diebold-Mariano-Test Basically, this test gives me a DM statistics, and also the p ...
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1answer
100 views

Interpreting what this means in a paper - significantly different at the .05 level? [duplicate]

I am having a hard time interpreting what something means in a paper I'm trying to get through. If you care, this is the paper: Gender Differences in the Effect of Education on the Slope of Experience-...
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0answers
102 views

What does p-value mean in Multiple Regression Analysis? [duplicate]

I was trying to learn the usage of p-value in Multiple Regression Analysis. I have found the following sentence which meaning is not clear to me. If the null hypothesis is true (b1=0), the chance of ...
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0answers
94 views

Poisson distribution help [duplicate]

In many cities, neighborhood Crime Watch groups are formed in an attempt to reduce the amount of criminal activity. Suppose one neighborhood that has experienced an average of 10 crimes per year ...
0
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1answer
65 views

What does my p-value indicate? [duplicate]

so I got similar results from a t-test output for my p-value 2.50e, but am not sure if it's correct or how to interpret. ...
0
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1answer
46 views

Precise definition of a p-value [duplicate]

We are given the following experiment: Consider an experiment which is a Bernoulli trial: it either succeeds with probability p or fails with probability 1− p; trials are independent of one another. ...
0
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1answer
75 views

P-value (statistics) T-test Analysis of Variance (statistics) +2 What does p-value of 0.7624 mean in a t test with two groups of relevation? [duplicate]

I’ve done 2 testing on 40 users using 2 Mobile App for each one I’ve got the time that each user has spent on them T-Test’s result is: t=0.48448,df=76.638,p-value=0.6294 Hyp-Alt: true difference in ...

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