get standard deviation

MACD indicators are a technical indicator that I like very much, he is also rare among the thousands of technical indicators in the stock market. using only one technical indicator can select the technical indicators of highly operational individual

/*** Get the standard deviation of the array * @ Param unknown type $ AVG * @ Param array $ list * @ Param boolen $ isswatch * @ return unknown type */public static function getvariance ($ AVG, $ list, $ isswatch = false) {$ arraycount = count ($

· Source: http://www.dxy.cn/bbs/thread/6492633#6492633 6 Floor:"As far as I know, the SD reaction is the variability of the observed value, which represents the average representation, while the SEM is standard error of mean, is the average

1 mean value The mean value represents the size of the DC component in the signal, expressed in E (x). For a Gaussian white noise signal, its mean value is 0, so it has only the AC component. 2 square of the mean value The square of the mean,

statistical methods in machine learning .Statistics is a pillar of machine learning.Primitive observations are just data, but they are not information or knowledge. Data raises problems, such as: What is the most common or expected

1.1, what is the K nearest neighbor algorithmWhat is the K nearest neighbor algorithm, namely K-nearest Neighbor algorithm, short of the KNN algorithm, single from the name to guess, can be simple and rough think is: K nearest neighbour, when K=1,

Classification algorithm pay attention to the beginning algorithm to find the probability characteristic parameter of the prior probability condition the continuous mean of the discrete characteristic parameter and the standard deviation to find the

9.6.Random-generate pseudo-random numbersSource Code: lib/random.py This module implements pseudo-random number generators for various distributions.This module implements pseudo-random number generation and various distributions For

There is a dumpling house at the door of our House, which has many types (pork, mutton, chicken, seafood and vegetarian dishes; dishes: cabbage, Leek, cabbage, zucchini, eggplant, green peppers, wild vegetables, lentils, tomatoes, etc.), delicious,

Introduction to the statistical data of the ImageStat module of Python image processing library PIL The ImageStat module is used to calculate the statistical data of an entire image or an image area. 1. Functions of the ImageStat Module 1.