IQ142a: hurdle prep with figures

The notebook

In order: what the lab saw, what it asked, what it proposed and why, what the tests said, and what an investigator concluded. Numbers are aggregates on the discovery data unless a step says otherwise.

1. Hypothesised15 Oct, 23:10

   IQ142a: hurdle prep with figures KILLED amber

   because CONTROL: hurdle run as a prep for a handicap chase, runners whose last run has the figure.

   (race_type = 'Chase' AND region = 'GB' AND is_handicap = 1 AND is_novice = 0 AND last_race_type = 'Hurdle' AND days_since_last_run <= 45 AND prior_chase_runs >= 2 AND (last_position IS NULL OR last_position >= 4) AND sp_decimal <= 15) AND l_entry_speed_pct IS NOT NULL

   made by import

2. Tested15 Oct, 23:10

   broad: A/E 1.21 on 134 bets, by period 1.13 · 1.34.