What this is
The shares and the physical copies-per-purchase are the same under both unit readings; only what the headline measures changes (one-unit headline understates copies by 151,379; two-unit headline overstates purchases by the same).
The values
- DP share of purchases: 0.087
- DP copies share of copies: 0.16
- Second copy share of copies: 0.08
- Copies per purchase: 1.09
Where it comes from
Our calculation from other figures in the trainer’s notes:
Show the working
- 151,379/1,742,008 = 0.0869
- 302,758/1,893,387 = 0.1599
- 151,379/1,893,387 = 0.0800
- 1,893,387/1,742,008 = 1.0869