D07-F07-A13 · LEVEL 2 GUIDED LAB · SYNTHETIC DATA

Adaptive Price Zone

How do double-smoothed price and range create an adaptive zone? Walk the evidence clock one stage at a time. This lab teaches the publication contract; it does not simulate returns, platform parity, or trade performance.

Selected expression

center=double EMA(P); width=k*double EMA(H-L); bands=center +/- width

Availability rule

An output at t may use only finite, basis-consistent observations available through t; chart alignment never moves the information clock backward.

calculated · step 1 of 7

Verified synthetic fixture

This lab is paired with datasets/implementation-fixtures.json: 96 deterministic, oldest-to-newest observations spanning oscillating, rising, and moderating regimes. It is teaching data—not market history or predictive evidence.

Canonical latest output (D07-F07-A13)
{
  "center": 104.55810128266437,
  "upper": 110.82015139881207,
  "lower": 98.29605116651666
}

Executable checks cover this result, flat/zero-volume boundaries, invalid timestamps, and prefix causality in both language entry points.