Does LINQ model the aggregate SQL function STDDEV() (standard deviation)? If not, what is the simplest / best-practices way to calculate it? Example: SELECT test_id, AVERAGE(result) avg, STDDEV(result) std FROM tests GROUP BY test_id ...
I've searched the SQLite docs and couldn't find anything, but I've also searched on Google and a few results appeared. Does SQLite have any built-in Standard Deviation function? ...
Hello. I need to calculate the standard deviation of a generic list. I will try to include my code. Its a generic list with data in it. The data is mostly floats and ints. Here is my code that is relative to it without getting into to much detail: namespace ValveTesterInterface { public class ValveDataResults { private ...
I am trying to calculate value $x in a number series based on an array of numbers (as $numbers). Ex: $numbers = array(1=>1000,2=>600,3=>500,4=>450,5=>425,6=>405,7=>400,8=>396); function estimateNumber($x) { // function to estimate number $x in $numbers data set } What would be the most statistically accurate method? ...
I'm writing a c extension to calculate he standard deviation. Performance is important because it will be performed over large data sets. I'm having a hard time figuring out how to get the value of pyobject once I get the item from a list. This is my first time writing a c extension for python and any help is appreciated. Apparently ...
Hi Guys, I am solving some examples from Data Networks by Gallager and i didnt quite understand this particular question. The question goes as follows: Suppose the expected frame length on a link is 1000 bits and the standard deviation is 500 bits Find the expected time and standard deviation of the time required to transfer a million...