Statistics Tool

Technical Replicate Combiner

Enter your technical replicates (mean, SD, n) to compute the pooled biological replicate. Tab between fields, paste from Excel/Prism, then copy the result back into Prism.

Technical Replicates 3 replicates
# Label Mean SD n
Biological Replicate — Combined Result
Mean
—
SD
—
n
—
Pooled SD formula — accounts for both within-group and between-group variance:
SS_within = Σ (nᵢ−1)·SDᵢ²  ·  SS_between = Σ nᵢ·(x̄ᵢ − x̄)²  ·  SD_combined = √((SS_within + SS_between) / (N−1))
Tab between fields. Press Enter on n to add a row. Paste a block from Excel/Prism into any cell to bulk-fill.