Right-Tailed Test
Let us consider that we want to find the T critical value of the right-tailed test when the critical level (q) of 0.10 and the degree of freedom (df) is 34.
Example:
Python3
# Import Library import scipy.stats # To find the T critical value scipy.stats.t.ppf(q = 1 - . 10 ,df = 34 ) |
Output:
The T critical value is 1.30695. When the test statistic is greater than this value, the results of the test are statistically significant or critical.
How to Find the T Critical Value in Python?
To perform a T-test, we will get a test statistic as a result and determine whether the T-test results are statistically significant, we can compare the test statistic with the T critical value, if the absolute value of the test statistic is greater than the T critical value, then the test results are statistically significant.
T critical value can be found by using a T-distribution table or using statistical software. To find the T critical value, you need to specify the values:
- A critical level (q) (common values are 0.01, 0.05, and 0.10)
- The degrees of freedom (df)
Using these two values, you can find the T critical value to be compared with the test statistic.