Calculators
Download free research calculators
There are several Excel-based calculators available for free download in Research Engineer.
Click on a button below to continue.
Click on a button below to continue.
Download G*Power to calculate the needed sample size for chi-square, Mann-Whitney U, independent samples t-test, one-way ANOVA, McNemar's test, Wilcoxon, repeated-measures t-test, repeated-measures ANOVA, Pearson's r correlation, and the point-biserial correlation.
Free Excel-based calculator for diagnostic testing calculations like sensitivity, specificity, Youden index, positive predictive value (PPV), negative predictive value (NPV), and total diagnostic accuracy.
Free Excel-based calculator for epidemiological calculations like control event rate (CER), experimental event rate (EER), absolute risk reduction (ARR), absolute risk increase (ARI), number needed to treat (NNT), and number needed to harm (NNH).
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- Statistical Analysis
- Sample Size Calculations
- Diagnostic Testing and Epidemiological Calculations
- Psychometrics