
Calculate conversion rate with a denominator you can defend
Choose the event, population and period before you divide. Worked examples show why sessions, users and counts differ.
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Better questions. Clearer decisions.
Practical thinking about measurement and the experience of completing a digital task.

Choose the event, population and period before you divide. Worked examples show why sessions, users and counts differ.
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Find unclear labels, broken conditional fields and poor error recovery with a keyboard and a phone.
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