Free research tools · Page 14

Hedges’ g Calculator

Standardize an independent-group mean difference using a pooled SD and approximate small-sample correction.

Recover a normal-approximation SE on a difference or log-ratio scale from compatible interval limits.

Apply Holm or Benjamini–Hochberg adjustments to a complete family of exact p-values.

Calculate a descriptive event rate with an explicit person-time denominator and reporting unit.

Translate an analyzable sample target into enrollment and timeline scenarios, with explicit loss assumptions.

Summarize aggregate missing counts for one variable and take away an audit checklist.

Find a reporting-guideline starting point for your study design and open its official source.

Define variables, coding and collection rules, then download a data dictionary and blank collection sheet.

Understand common statistical reviewer requests and build a documented response plan.

Compare the methodological decisions that need resolving before quantitative synthesis.

Explore anticipated precision for a single proportion and recruitment allowances for missing outcomes.

Explore a hypothetical effect, its uncertainty, and a meaningful-difference threshold.