Aggregate to find the weighted median
43132
Is there a weighted.median() function?
25605
Why does the median minimize $E(|X-c|)$?
84169
What is the terminology for data aggregated via summed totals versus data aggregated via means?
24411
Aggregate / summarize multiple variables per group (e.g. sum, mean)
100371
Creating a histogram using aggregated data
19013
What is a good algorithm for estimating the median of a huge read-once data set?
119208
Hypothesis test for difference in medians among more than two samples
56244
Finding median of list in Python
126696
Find running median from a stream of integers
63406
Empirical relationship between mean, median and mode
39939
Variance of sample median
141134
How to calculate weighted covariance?
41930
Mean of $ \sum (X_i - \bar{X})^2$
136871
R use ddply or aggregate
108535
Incremental averageing
34797
$E|X-m|$ is minimised at $m$=median
92465
Calculating area weighted average of attribute in one layer by shape in another using ArcGIS for Desktop?