What this is
Bound the both-versions buyer share from the per-version rows. No source observes separate-pack double purchases, so the truth lies between the bounds.
The values
- Floor share of purchases: 0.231
- Ceiling share of buyers: 0.798
- Floor basis: only Double Pack buyers own both
- Ceiling basis: every Shield single bought by a Sword-single holder
Where it comes from
Our calculation from other figures in the trainer’s notes.
Show the working
- floor 254,612/1,101,994=0.231
- ceiling (347,629+254,612)/(499,753+254,612)=602,241/754,365=0.798