Commodities · Building a commodity strategy · lesson 7 of 9 · 7 min read · David Alexander
Sample size, when the setup happens twelve times a year
sampling error
The gap between a sample's statistics and the true underlying rates, shrinking only with the square root of the observation count. For rules capped by a calendar, the count grows at the calendar's speed and no faster - which puts honest confidence years or decades away, and no enthusiasm changes the arithmetic.
This lesson is part of the advanced modules.
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