NIST — Blend proportions are dependent variables that sum to the whole

Annotation

A whiskey formula is compositional data; ordinary independent-factor intuition cannot be applied without respecting the sum constraint.

Challenges Claims

Citations

NIST/SEMATECH — EXT-1328 — What is a mixture design?, 6, 10

Context

NIST distinguishes mixture experiments from ordinary independent-factor experiments.

Excerpt ID

1328

Excerpt Text

In a mixture experiment, the independent variables are nonnegative component proportions whose fractions must sum to one, so changing one proportion necessarily changes the feasible values of the others.

Literature Notes

NIST/SEMATECH — Mixture-design planning begins with the response and feasible region

Locator End

10

Locator Start

6

Locator Type

Paragraph

Originating Working Notes

Page (text)

Source

No access

Source Section

What is a mixture design?

Supports Claims

Tags

Mixture Experiment Design

Verification Notes

Verified against the accessible live source on 2026-08-29. Stored as a paraphrase; exact wording must be rechecked before publication.

Verification Status

Verified

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