Figure A10.
The image features two scatter plots side by side. The left plot shows the relationship between bid price ratio and the proportion of winning bids for general competitive bidding, marked with a polynomial curve of order two. Data points represent individual bids, with a vertical line indicating a regression discontinuity value of negative zero point one zero six. The right plot depicts the same relationship for designated bidding, featuring similar scatter points and a polynomial fit, with a vertical line representing a different regression discontinuity value of negative zero point five two seven. Each plot has its own axis, with the vertical axis indicating 'Proportion of winning bids' and the horizontal axis showing 'Bid price ratio'. The average sample within bins is indicated by grey dots.Scaffolding and earthwork procured by Ehime Prefecture
Note(s): Same as in Figure A9
Source: Author’s own work