The distributions method calculates the normal distribution of number of bids per lot received . The expected distribution shows number of bids per lot received [number of tenders won when 1 bid was received] - [number of tenders won when 2 bids were received] - [number of tenders won when 3 or more bids were received].
One would expect the company's own tender winning distribution to be alignined with the general distribution. A large skewness towards majority of tenders won when one bid was received might indicate a problem.
A large skewness towards majority of tenders won when several bids were received might indicate a different problem. While it if possible that the economic operator was simply more successful in bid preparation, it might also indicate that the bidder was privy to some information that the othed bidders did not (like estimated valute,…).
A large skewness towards majority of tenders won when only one bid was received might indicate a problem. The public procurement systems normally strive to receive more than one quality bid.
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