Statwise brings back the statistical analyses people used to run with the Analysis ToolPak, inside
Google Sheets™: pick a range, pick an analysis, and get a full labelled output table in a new tab.

ALL SIXTEEN ANALYSES ARE FREE
• Descriptive statistics · correlation · covariance · histogram · rank and percentile
• t-Test: two samples with unequal variances (Welch), with equal variances (pooled), and paired
• z-Test for two means · F-Test for two variances
• ANOVA: single factor · two-factor without replication · two-factor with replication
• Regression: one or many predictors, with standard errors, t statistics, p-values and 95% confidence
  intervals — the complete summary table, not just a slope
• Moving average · exponential smoothing

BUILT FROM WHAT THE OLD TOOL GOT WRONG
• Nothing ever fails silently. Every run ends with a result or with a message naming the cause and the
  exact cell — for example "C47 contains text ('n/a')" — and offers to skip those cells and continue.
• Your sheet is never modified. Results always go into a new tab, and you stay on the tab you were on.
• No row ceiling for ordinary work: up to 500,000 cells are read at once, in a single pass, and the panel
  reports how many rows it analysed and how long it took.
• The unequal-variances t-test uses the Welch–Satterthwaite degrees of freedom — the formula SciPy and R
  use — and prints them, so you can check.

CORRECTNESS YOU CAN VERIFY
Regression is computed with a QR decomposition and reproduces the certified coefficients and standard
errors of the NIST Statistical Reference Datasets, including Longley — the dataset designed to break
implementations that take the numerically easy route. Every other statistic is checked against SciPy in an
automated suite that runs before each release. Correctness is not a paid feature: the same formulas run
for everyone.

PRO — $29 a year or $69 once, per user
• Effect sizes with 95% confidence intervals: Cohen's d, Hedges' g, eta squared
• An APA-style sentence you can paste straight into a write-up
• Non-parametric tests: Mann-Whitney U, Wilcoxon signed-rank, Kruskal-Wallis, Spearman
• Chi-square goodness of fit and independence, with Cramér's V and a small-expected-count warning
• Assumption checks: Levene's test, variance inflation factors, Durbin-Watson
• Holm-adjusted pairwise comparisons after ANOVA
The same licence unlocks every tool we publish next. If a licence lapses you keep every free feature.

PERMISSIONS
One permission, and the narrowest one there is: "See, edit, create, and delete only the specific Google
Sheets™ spreadsheet this application is used in". Statwise cannot see your other spreadsheets, your Drive
or your mail. Everything is computed inside the add-on — there is no server of ours, no analytics, and
nothing about you or your data is sent anywhere. Details:
https://legal.syncerp.work/statwise/privacy

Google Sheets™, Google Workspace™ and Google Apps Script™ are trademarks of Google LLC. Statwise is an
independent product of Going Stellar SRL and is not affiliated with or endorsed by Google.