How do I calculate p-values in statistics?

How do I calculate p-values in statistics?

To calculate a p-value, you first need to define your null hypothesis and collect your data. What type of test are you using?

I'm using a t-test for my data.

Great! For a t-test, you can use the formula: p-value = P(T > t | H0). You can also use statistical software to compute it easily.

Can you show me how to do it using Python?

Sure! You can use the scipy.stats library. Here's a simple example: from scipy import stats; p_value = stats.ttest_ind(data1, data2).pvalue.

What if I have a one-tailed test?

For a one-tailed test, you would divide the p-value by 2 if your test statistic is in the direction of the alternative hypothesis.