prueba t

The t-test, or prueba t, is a statistical method used to compare the means of two groups to determine if they are significantly different from each other. It helps analyze data when sample sizes are small and when the population standard deviation is unknown. For example, it can assess whether a new teaching method is more effective than the traditional one by comparing test scores of students from both methods. A low p-value from the t-test indicates strong evidence against the idea that the group means are the same, suggesting a significant difference.