Message:

<p>[QUOTE=&quot;Jaelus, post: 3866906, member: 46237&quot;]I would not lump all auction houses together. </p><p><br /></p><p>Take for example an auction house known for taking photos that make the coin look better than it really is, and selling coins with undisclosed problems. Then as another example an auction house known for premium quality coins that are frequently better than depicted, with conservative grades given. Both examples I mentioned may sell the same coin with the same <i>listed </i>grade, however, the better auction house might have the coin hammer for 10x as much. When taken together along with average auction houses, these can look like outliers, but they may not be outliers at all for those respective auction houses. Your data for an average house may be a much tighter distribution, and for the outliers, you may have auction houses that overgrade, and others that undergrade.</p><p><br /></p><p>It may be useful to examine each auction house to determine how to handle them. For example, the better auction house in my example sells better coins. You may be more inclined to bid at that auction house for this reason, however, your data taking into account all auction houses will result in you underbidding at this particular auction house, and that isn&#039;t a helpful extrapolation from the data.[/QUOTE]</p><p><br /></p>

Your name or email address:

Do you already have an account?

• No, create an account now.
• Yes, my password is:
• Forgot your password?

Stay logged in