Numista Coin Values

6 posts • viewed 126 times
SRV5490
Joined: 25 Sep 2015
Posts: 827
Posted: 20 Sep 2020, 16:02 #
Posted: #
When I add a value to a coin I purchased, will that affect the value of that coin for everyone.

Example: I enter a value of $10 USD for a coin I purchased that is currently averaging $50 USD in XF condition.
CoinCollector1243
Closed account
Posted: 20 Sep 2020, 16:11 #
Posted: #
I believe it is based solely on matched sales.
Idolenz Catalogue referee
Joined: 13 Jul 2013
Posts: 9583
Posted: 20 Sep 2020, 16:26 #
Posted: #
If it is an outlier the value will not influence the "average".
Topic moved to "Numista website" (ZacUK, 20 Sep 2020, 19:23)
Xavier Site admin
Joined: 16 Jan 2007
Posts: 9120
Posted: 20 Sep 2020, 22:03 #
Posted: #
Hello,
I confirm the value will be considered (as all user values) but it will not influence the value show to everyone if it is an outlier. Values are computed as a mean and not an average.
CoinCollector1243
Closed account
Posted: 20 Sep 2020, 22:36 #
Posted: #
Quote: "Xavier"Values are computed as a mean and not an average.
​Correct me if I am wrong, but don't "mean" and "average" mean the same thing?
Xavier Site admin
Joined: 16 Jan 2007
Posts: 9120
Posted: 20 Sep 2020, 23:09 #
Posted: #
Sorry I meant the median: https://en.wikipedia.org/wiki/Median
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