Analysis-planning worksheet
Connect your research question to outcomes, comparisons, repeated measurements, clustering, missing data, and reporting. Includes a fictional longitudinal-study example.
Free calculators, results formatters, and planning worksheets, plus paid workflow bundles for research labs. Free resources require no sign-up; annual lab licenses are scoped through a consultation.
Define the question, choose measures, and plan the sample and analysis before collecting data.
Explore six waves of simulated reading scores and see how trajectory class results change with modeling assumptions. The email download includes the audit report, R scripts, and a project scoping guide.
Explore the demo and audit kit →Trace results in a synthetic grant evaluation back to the R analysis. Request the sample kit by email for the Word and HTML reports, analysis crosswalk, and ERIC submission checklist.
Explore the sample kit →Solve for the sample size a study needs, or the power a planned sample already has — for t tests, one-way ANOVA, correlation, and chi-square, plus a multilevel/cluster-randomized-trial MDES calculator with sensitivity charts and a proposal-ready methods paragraph.
Open the calculators →Connect your research question to outcomes, comparisons, repeated measurements, clustering, missing data, and reporting. Includes a fictional longitudinal-study example.
Free · Printable checklist
Compare scope, deliverables, fees, revisions, and data handling before choosing statistical support.
Open checklist → · Download HTMLFree · Printable worksheet
Document an analysis problem, checks attempted, assumptions, and the next defensible decision.
Open worksheet →Plan evaluation questions, measures, data responsibilities, reporting, and budget. Includes a fictional employment-support example and a blank worksheet.
Check the evidence behind questionnaire scores, plan a shorter version of a questionnaire, and compare AI models on shared evaluation items.
Review questionnaire purpose, instrument versions, adaptations, scoring, and evidence for intended uses. Includes a fictional example and a blank review worksheet.
See seven common LPA mistakes in a worked synthetic audit. Includes model comparisons, a classification error example, and reproducible R and Quarto code.
Get the free LPA kit →Compare two AI models scored on the same eval items: the accuracy gap with a confidence interval and a paired McNemar test, plus Python and R code that reproduces the result. Enter counts or paste per-item results; checked against R and SciPy.
Compare two models →Explore how a long questionnaire could be shortened while keeping the measurement precision your study needs. Choose a package, see an initial feasibility check, and download a scope summary. No participant data is entered; pricing is confirmed after a feasibility audit.
Explore shortening options →See how cutting items changes measurement precision, statistical power, and the sample size a study needs. Illustrative scenarios built from hypothetical items, not fitted item parameters.
Open the simulator ↗Format statistical results and check whether reported test statistics and p-values agree.
Paid lab licenses · Pilot inquiries
Equip your lab with editable R Markdown workflows, synthetic worked examples, diagnostics, and reporting guidance from Dissertation Stats Helper. Annual lab licenses bundle workflows around your team's research methods, with scope and support agreed before purchase.
Explore lab workflow bundles →A standalone power and sample-size planner for two means, one-sample or paired means, correlation, and two proportions, with a live power curve and a copyable reporting sentence. Its t-test results match R exactly.
Visit statpower.org ↗ FreeStuck on a statistics question? Send it to the DASS team, or use the free test chooser to find the right analysis for your data.
Visit askstats.net ↗A reporting-completeness checker is next — a quick scan for the kind of thing that usually means digging up an old textbook or bugging a colleague.
Statistical and methods QA for manuscripts, dissertations, and grant proposals — a free 30-minute consult to talk through what the tool found.
Prefer to talk? Book a free project consultation.