8k views

Explaining p-value to a sophisticated layman [duplicate]

I think I understand the concept of p-value but unfortunately I still have to exert a lot of brain cycles to get my arms around it. I would like to get an explanation of the p-value that is rigorous ...
32k views

Interpretation of the p-value of the y-intercept coefficient in a linear regression [duplicate]

I am trying to interpret one of the p-values in a one variable linear regression. Some of the answers I've seen for similar questions were not worded as thoroughly as I would have liked. My ...
9k views

White noise test interpretation [duplicate]

How to interpret white noise test from Stata? Have a white noise means that a variable does not have autocorrelation. Can I say here that all of my variables has a white noise (does not have ...
11k views

what does it mean for a variable to be statistically significant? [duplicate]

what does it mean for a variable to be statistically significant?? Could anyone give a complete answer to this question?
7k views

What does the p value mean for Cox hazard ratio? [duplicate]

I am puzzled about the interpretation of P value in the Cox hazard ratio analysis. I read from literature that the P value is to "reject the null hypothesis that HR=1". However, in many cases, we have ...
7k views

Why is smaller the p-value, larger is the significance? [duplicate]

I am trying to understand the concept of p-value. Wikipedia mentions: The p-value is defined as the probability, under the assumption of hypothesis $H$, of obtaining a result equal to or more ...
2k views

How to read the alternative Hypothesis [duplicate]

I have created a T test in R and got the below output. ...
1k views

Intuitive explanation of why p is not the probability of the null hypothesis [duplicate]

I've got to teach a basic course on the $\chi^2$ test soon, and I will of course insist on the fact that $p$ is not the probability of the null hypothesis to be true, and that the result of the test ...
3k views

Is there an accepted definition for “P for trend” or “P-trend” [duplicate]

So is "P for trend" the same in principle as a common-or-garden P-value, but in a specific application i.e. odds ratios? And can P-value, P for trend, and P-trend be regarded as interchangeable ...
2k views

Breusch-Pagan Test using R [duplicate]

I'm currently working on the Breusch-Pagan Test using RStudio through the command ncvTest. I've used the dataset pipeline.txt in ...
3k views

T test and P value [duplicate]

Possible Duplicate: What is the meaning of p values and t values in statistical tests? I currently start epidemiology class, I am very confuse of p value and t test, what do they mean? how to use ...
2k views

Reset test in r [duplicate]

I have two questions about this test in R: How do you read the result of p-value? I assume that the bigger it is the more successful it is. When I do a multiple dummy variable regression, I get a p-...
462 views

P-Value Clarification [duplicate]

I'm new to P-Values and Hypothesis testing and I noticed that p-values are explained differently everywhere I go. In my lecture notes it has a method for hypothesis testing and the last part says that ...