I would like to calculate the median value of a particular column in a .txt file, output that value and also say if that output value is ok.

I would like to calculate the median value of a particular column in a .txt file, output that value and also say if that output value is ok.

I am trying to calculate the median of a column of numbers if they match an ID type on a different column. The input file has 3 columns. The column that has the ID is column 1 and the column with the values I'd like to find the median for is column 3. The file does not need to be sorted.

Statistics is an essential part of Math, they have several practical applications, but sometimes very hard to understand for non mathematicians. In this tutorial, we’ll focus on how to implement an algorithm to calculate statistical median.

1-9-2014

http://news.yahoo.com/more-than-half...201537390.html

More than half in Congress are millionaires

Lawmakers with a net worth below $1 million are now a minority in Congress, an analysis of congressional financial disclosure data finds.
The median net worth for the 530 current lawmakers who were in Congress as of the May filing deadline was $1,008,767 -- an increase from last year

Does median filtering replace the origin value once? If is it so why that only value is replaced?

I was wondering what would be the easiest way to get mean, mode and median from image histogram. I am especially interested in mode value. To clarify, I am looking for something like:

histogram-statistics image.jpg

and output like this:

Mean:128
Median: 120
Mode: 90

A program outputs its data in this format:

n=4607356
null_cells=5668556
cells=10275912
min=0.0433306089835241
max=0.53108499199152
range=0.487754383007996
mean=0.40320252333736
mean_of_abs=0.40320252333736
stddev=0.0456556814489487
variance=0.00208444124856788
coeff_var=11.3232628285782
sum=1857697.565113524
first_quartile=0.378443
median=0.410276
third_quartile=0.435232
percentile_90=0.457641

I have a Media Temple server running http://www.popsapp.com which I am having latency issues with.

If I run

ab -n 100 -c 10 http://www.popsapp.com/

from my local machine I get very bad stats e.g.:

Connection Times (ms)
min mean[+/-sd] median max
Connect: 179 3375 2185.4 2837 12525
Processing: 0 505 693.3 229 4564
Waiting: 0 50 115.4 0 4