Back to Search-quality baseline: deprecation-aware (Phase 1.1, v1.2.0 candidate)

Metric | Value
--- | ---
Pairs evaluated | 30
Swift form ranked above Obj-C form | 30 / 30 (100%)
Obj-C form ranked above Swift form | 0 / 30
Both forms in top-10 | 7 / 30
Only Swift form in top-10 | 23 / 30
Both missing from top-10 | 0 / 30

Sign test (on the 7 both-present pairs): k = 7 Swift-higher of n = 7 trials, two-sided p = 0.0156, one-sided p = 0.0078. The null hypothesis (ranker has no preference between modern and legacy form) is rejected at the 0.01 level.

For the other 23 pairs the Obj-C form did not appear in the top-10 at all, which is a stronger statement than "Swift higher in pair": the legacy form is not surfaced at all under a developer's natural query.

The Swift form was at rank 1 (position 1) in every one of the 30 queries.