Student's t-test

Student's t-test is a statistical method used to compare the means of two groups to determine if they are significantly different from each other. It's especially useful when sample sizes are small and when the population's standard deviation is unknown. The t-test helps researchers understand whether any observed differences in average values—like test scores or heights—are likely due to random chance or if they reflect a true difference between the groups. By calculating a t-value and comparing it to a critical value from a t-distribution, one can assess the significance of the result.