What is Student's t-Test?
The Student's t-test is a statistical hypothesis test used to determine if two data sets come from populations with different means. It's widely used in research to compare sample averages, especially when sample sizes are small and population variances are unknown. The calculator helps researchers assess whether observed differences between groups are statistically significant or likely due to chance. Common applications include clinical trials, psychology studies, and quality control processes.
Formula
t = (M₁ - M₂) / √((s₁²/n₁) + (s₂²/n₂))
Where:
M₁, M₂ = Means of two samples
s₁², s₂² = Variances of two samples
n₁, n₂ = Sample sizes
Where:
M₁, M₂ = Means of two samples
s₁², s₂² = Variances of two samples
n₁, n₂ = Sample sizes