Read a table properly, use formulas that update themselves, summarise real numbers, and build charts that tell the truth.
4 units, about 3 hours. Free.
Interpret rows, columns and headers, and spot what a table does not tell you.
2Use cell references and basic formulas so results recalculate when the data changes.
3Use totals, averages and counts, and know when an average misleads.
4Choose the right chart for the question and recognise the tricks that make charts mislead.