The test statistic in an ANOVA test follows the F-distribution. The F-distribution graph is not symmetric, and its shape depends on two parameters dfn and dfd. dfn = degrees of freedom while calculating the estimate of the variance of the numerator and dfd = degrees...

What is Tukey’s test for post-hoc analysis? In one of our previous articles, we discussed the one-way ANOVA test. We looked at an example where a teacher wants to test the effectiveness of three different teaching methods. So, he selects three distinct groups of...

What is a one-way ANOVA test? In one of our previous articles, we discussed t-tests. We discussed that if we want to compare the mean of two independent groups, we perform a t-test. But, if we have three or more independent groups and we want to determine whether the...

We can use the scipy.stats module to calculate the critical value for a t-test using Python. The critical value for a t-test depends on a few factors: The degrees of freedom Whether the test is a left-tailed, right-tailed, or two-tailed t-test The significance level...

We can calculate the p-value from the t-statistic using the following Python code: from scipy import stats degrees_of_freedom = 19 # p_value for left-tailed test t_score = -1.0017194659421818 p_value = stats.t.sf(abs(t_score), df=degrees_of_freedom) print("p-value for...