Tutorials

Step-by-step walkthroughs of features and workflows.

• June 16, 2026

  Watch the posterior tighten: a running credible interval with SCAN

  Pick up Bayes's billiard table where it ended and watch belief converge after every roll. SCAN builds the cumulative tally and MAP turns each step into a credible band, so the whole time series is two formulas instead of a column per look.

• June 15, 2026

  LAMBDA in TukeySheets: MAP, SCAN, REDUCE, BYROW, BYCOL

  Write a small function once and hand it to a column. A tour of LAMBDA and the five functions that apply it, elementwise, cumulative, folded, by row, and by column, with no helper columns and a portable, standard syntax.

• June 2, 2026

  Dates that know they're dates: working with date columns

  Date columns store real calendar values, so arithmetic and the helper functions stay correct across leap years and month boundaries. Enter dates, measure spans, and shift by days, months, or years in TukeySheets.

• May 28, 2026

  Never touch the mouse: navigating a spreadsheet by keyboard

  Driving a spreadsheet from the keyboard reduces to three moves: navigate, select, and build formulas by pointing. A hands-on tour using the iris dataset.

• May 28, 2026

  Bayes's billiard table, rebuilt in a spreadsheet

  The thought experiment that launched Bayesian inference, rebuilt in TukeySheets: six formulas roll a ball onto a hidden spot and recover where it landed.

• May 20, 2026

  Bayesian updating with grid approximation in TukeySheets

  Bayesian inference fits in a spreadsheet: five anchored spill formulas give a full posterior over a coin's bias, and three more do the sequential update.

• May 17, 2026

  Pivot tables: a column of facts, a table of answers

  A pivot table summarizes one column of values by the categories in others. Build one in TukeySheets (rows, columns, values, totals) from a sales sheet.

• May 16, 2026

  Monte Carlo: one column per variable

  Build a sales-pipeline simulation by giving each uncertain input its own column, combining them with a spill formula, and reading answers off cell formulas.

• May 15, 2026

  Spill functions: one formula, a whole column

  One formula fans down a column. A tour of SAMPLE.* random draws, SEQ.* sequences, and column-wide arithmetic: the three kinds of spill in TukeySheets.