Testing changes · The power · Element

The calculation

Whether the test can detect the effect.

The part

What it is

Baseline rate, minimum effect, available volume and test duration. Four numbers producing a yes or no.

Where the answer is no, the options are a longer test, a bigger expected effect, or not testing.

The smallest level

The attributes it carries

Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.