D07-F08-A08 · LEVEL 2 GUIDED LAB · SYNTHETIC DATA

Normalized Price Transform

How unusual is current price relative to its recent mean and dispersion? 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

package convention: z_t=(P_t-mean_n(P))/stdev_n(P), with a zero-dispersion state

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-F08-A08)
{
  "value": -1.9447777278294258,
  "mean": 104.20055051999998,
  "std": 2.164636086561151
}

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