D07-F06-A01 · LEVEL 2 GUIDED LAB · SYNTHETIC DATA

Normalized ATR and ATR Percentage

What percentage of price does the current average true range represent? 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

NATR=100*ATR_n/C; ATRP may use ATR_n/C or ATR_n/MA_n(C)—declare the denominator

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-F06-A01)
{
  "atr": 3.245219101666433,
  "natr": 3.2455172196242965
}

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