StatisticsHypothesis Testing

Two-Sample T-Test (Independent)

Compare the means of two independent groups using Welch's t-test (unequal variances). Computes t-statistic, Welch-Satterthwaite df, p-value, and decision.

Live Calculator · Welch's T-Test · Statistics

Inputs

Group 1

Sample Mean (x̄₁)

Sample Std Dev (s₁)

Sample Size (n₁)

Group 2

Sample Mean (x̄₂)

Sample Std Dev (s₂)

Sample Size (n₂)

Significance Level (α)

Tail

Results

T-Statistic

—

P-Value

—

Welch df

—

Critical Value t*

—

Decision

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Step-by-Step

T-Distribution (Welch df) — Two-Sample T-Test Visualization

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