Use our free Means Difference Calculator to quickly determine the statistical difference between two independent sample means. This powerful tool also computes the standard error of the difference, a crucial metric for interpreting research findings and hypothesis testing with confidence. Perfect for academic research, data analysis, and educational purposes.
Formula:
The Difference between Means (D) is simply the mean of the first sample minus the mean of the second sample:
D = M₁ - M₂
The Standard Error of the Difference (SED) for independent samples is calculated using the following formula:
SED = √((s₁²/n₁) + (s₂²/n₂))
Where:
- M₁: Mean of Sample Group 1
- M₂: Mean of Sample Group 2
- s₁: Standard Deviation of Sample Group 1
- s₂: Standard Deviation of Sample Group 2
- n₁: Sample Size of Sample Group 1
- n₂: Sample Size of Sample Group 2