Auc-Stat-Histogram
Da Norganna's AddOns
Purpose
Auc-Stat-Histogram is a statistics module that keeps a histogram of price data, returning a median and IQR.
Simply, Auc-Stat-Histogram provides a median value, based upon all prices ever seen; no data is ever discarded.
Options
The following options are available to the Histogram statistic:
Item Data Viewer
The Histogram statistic also includes the ability to view the actual histogram chart for specific items. With the options page open, alt-click on an item link in order to load its histogram.
The green bars are the raw data. For each price along the x-axis, the height of the bar indicates the number of times the item has been listed for that price. We might expect these green bars to form an approximately bell shaped curve, if the price were normally distributed about its median.
The red bar indicates the median price, based on the histogram data.
The blue line indicates the price probability curve for the item. Based on the data in the histogram, the blue line indicates the probability that any given price is the "actual" price. The point on the chart with the highest probability is the median price.
