Resources
The things you reach for mid-task: a term you half know, a chart you are not sure about, a formula you need today.
Why These Are Not Courses
A course is for learning something over time. These are for the moment you are stuck and need an answer now.
Questions come up mid-task
Somebody says EBITDA in a meeting, or you need to pick a chart before a deadline. You want an answer in a minute, not a course to work through.
Nobody remembers 657 definitions1
You are not meant to. Looking a term up again when it comes round is how it eventually sticks, so the glossary is built to be returned to rather than learned.
Most arguments are about definitions
When two reports disagree, the cause is usually that each counts something slightly different. One written definition settles it faster than checking the data.
Written for your role
Churn means one thing to a manager and another to an analyst. Every term carries an explanation for each of the seventeen roles, so the answer fits your job.
Sources: 1Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J. and Willingham, D. T. (2013), ‘Improving Students’ Learning With Effective Learning Techniques’, Psychological Science in the Public Interest 14(1), 4–58, which rates distributed practice, returning to material after a gap, among the two highest-utility techniques reviewed. 2Baldwin, T. T. and Ford, J. K. (1988), Personnel Psychology 41(1), 63–105, on the work environment and opportunities to apply learning as conditions for transfer.
Everything You Can Use Today
Things to look up while you work, rather than courses to work through. Two are finished; the rest say so on the page.
Data & Business Glossary
657 business and data terms, each with a clear definition, where it is used, why it matters, and an explanation written for your role. A hundred and twenty-five terms include a formula and worked example, and fifty-one include a diagram.
Open the glossary →Visualisation Guide
Forty-six visual types, from bar charts to Sankey diagrams, with what each is for and when to choose something else. Every visual links to its glossary term.
Open the Visualisation Guide →SQL Query Workbench
Real SQL in the browser: six exercises against a live dataset, with errors, hints and worked solutions. No install, nothing sent anywhere.
Open the workbench →Formula Grid
Real spreadsheet formulas in the browser: six exercises on a live sheet, with errors, hints and worked solutions.
Open the formula grid →Dashboard Critique
Find six faults in a deliberately poor dashboard, with the rule behind each.
Open it →Templates & Cheat Sheets
Two PowerPoint downloads ready now: five printable cheat sheets, and a report mock-up template with the page furniture locked. More planned.
See what is planned →Build Your Confidence with Data
Start where it helps most today, and come back for the rest.