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Questions tagged [statistics]

Statistics is the mathematical study of using probability to infer characteristics of a population from a limited number of samples or observations. Non-programming statistics questions are off-topic here, and they should be posted at https://stats.stackexchange.com instead.

statistics
6 votes
4 answers
27k views

How to get the temperature of motherboard of a PC (and other hardware statistics)?

does any one know how to get the current motherboard, processor or HD temperature statistics? In GNU/Linux, I know I could use something like hddtemp or sensord to get the info, and then parse it... ...
ramayac's user avatar
  • 5,183
8 votes
4 answers
2k views

What would a Database Diagram (ER Diagram/Table Layout) look like for measuring distribution of something?

If I was, for example, going to count "activities" across many computers and show a rollup of that activity, what would the database look like to store the data? Simply this? Seems too simple. I'm ...
Scott Hanselman's user avatar
83 votes
3 answers
38k views

Explain the quantile() function in R

I've been mystified by the R quantile function all day. I have an intuitive notion of how quantiles work, and an M.S. in stats, but boy oh boy, the documentation for it is confusing to me. From ...
Gregg Lind's user avatar
9 votes
10 answers
9k views

How do you visualize logfiles in realtime?

Sometimes it might be useful, but mostly just looking cool or impressive to visualize log files (anything from http requests and to bandwith usage to cups of coffee drunk per day). I know about ...
stian's user avatar
  • 2,884
2 votes
6 answers
1k views

Statistically removing erroneous values

We have an application where users enter prices all day. These prices are recorded in a table with a timestamp and then used for producing charts of how the price has moved. Every now and then, the ...
Marius's user avatar
  • 2,512
0 votes
4 answers
443 views

Probability of finding TCP packets with the same payload?

I had a discussion with a developer earlier today re identifying TCP packets going out on a particular interface with the same payload. He told me that the probability of finding a TCP packet that has ...
abnev's user avatar
  • 469
3 votes
6 answers
925 views

What's the correct term for "number of std deviations" away from a mean

I've computed the mean & variance of a set of values, and I want to pass along the value that represents the # of std deviations away from mean for each number in the set. Is there a better term ...
Daniel H's user avatar
  • 10.1k
23 votes
9 answers
111k views

How often should Oracle database statistics be run?

In your experience, how often should Oracle database statistics be run? Our team of developers recently discovered that statistics hadn't been run our production box in over 2 1/2 months. That sounds ...
user avatar
6 votes
14 answers
1k views

What emails clients are being used out there?

This is not "exactly" a programming question, but it's highly related. We are writing an app that sends out email invitations for a client (no, it's not spam). Their designer gave us an HTML and CSS ...
John Virgolino's user avatar
2 votes
3 answers
2k views

What is the easiest way to get total number for lines of code (LOC) in SQL Server?

I need to provide statistics on how many lines of code (LOC) associated with a system. The application part is easy but I need to also include any code residing within the SQL Server database. This ...
Ray's user avatar
  • 191k
13 votes
4 answers
3k views

Hidden Markov Models [closed]

I want to get started on HMM's, but don't know how to go about it. Can people here, give me some basic pointers, where to look? More than just the theory, I like to do a lot of hands-on. So, would ...
RD.'s user avatar
  • 149
3 votes
4 answers
2k views

What is the deployment rate of the .NET framework?

I've been looking for this information for my commercial desktop product, with no avail. Specifically, what I'm look for, is deployment statistics of the .NET framework for end-users (both granny "I'...
Silver Dragon's user avatar
11 votes
4 answers
2k views

How do I calculate the "cost" of a crash? [closed]

Background: Some time ago, I built a system for recording and categorizing application crashes for one of our internal programs. At the time, I used a combination of frequency and aggregated lost time ...
4 votes
6 answers
2k views

How do i generate a histogram for a given probability distribution (for functional testing a server)?

I am trying to automate functional testing of a server using a realistic frequency distribution of requests. (sort of load testing, sort of simulation) I've chosen the Weibull distribution as it "...
Jacob Rigby's user avatar
  • 1,353
0 votes
5 answers
311 views

Call Visitors web stat program from PHP

I've been looking into different web statistics programs for my site, and one promising one is Visitors. Unfortunately, it's a C program and I don't know how to call it from the web server. I've tried ...
Kyle Cronin's user avatar
  • 78.6k

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