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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.

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.
Sample Size Calculator
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.
Diagnostic Testing Calculator
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).
Epidemiology Calculator

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Statistician For Hire

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Eric Heidel, Ph.D. will provide statistical consulting for your research study at $100/hour. Secure checkout is available with PayPal, Stripe, Venmo, and Zelle.

  • Statistical Analysis
  • Sample Size Calculations
  • Diagnostic Testing and Epidemiological Calculations
  • Psychometrics

Contact Dr. Eric Heidel
consultation@scalelive.com
(865) 742-7731

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