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# p-value

mrfarhankhan
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**14**Contributor II
Hi experts,

How can I generate p-value for 95% confidence interval using rapidminer ?

Thanking in advance

Farhan !

How can I generate p-value for 95% confidence interval using rapidminer ?

Thanking in advance

Farhan !

1

## Answers

14Contributor II14University Professor568UnicornThis question was written more than 5 years ago.Sometimes we don't look at the past questions, as there are too many present ones. The beauty of this forum is that, instead of bashing you for reviving old threads, we are pleased that you actually went to find the historical questions to find your answer. So here it is, somehow.The theory behind the calculation of p-value from a confidence interval says:

- Get your confidence interval.
- Get the upper and lower limits for the confidence interval.
- Calculate the standard error as (upper - lower) / (2 * 1.96) (this is for 95% confidence)
- Calculate the test statistic as estimate of effect / standard error.
- Finally calculate the P value = (1 / √2

However, getting the confidence interval is quite tricky:π) *e^(-z2/2)https://community.rapidminer.com/discussion/44631/how-to-create-confidence-intervals-for-numeric-prediction

Instead of all this burden, you may want to play with T-Test operator to compare two performance vectors using statistical significance tests.

https://docs.rapidminer.com/latest/studio/operators/validation/performance/significance_tests/t_test.html

By using an ANOVA, you'll get the same result. Just take a look at the annotation in the end:

All the best,

Rodrigo.

14University Professor1,635UnicornLindon Ventures

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