probability mass function of normal distribution

PDF versionPMFA discrete random variable $X $ is said to has a Poisson distribution with parameter $\lambda > 0$, if the probability Mass function of $X $ is given by $ $f (X; \lambda) = \PR (x=x) = E^{-\lambda}{\lambda^x\over x!} $$ for $x =0, 1, 2,

The R programming language has become the standard of fact in statistical analysis. But in this article, I'll show you how easy it is to implement statistical concepts in Python. I'm going to use Python to implement some discrete and continuous

1. Two-item distribution (discrete)ImportNumPy as NP fromSciPyImportStatsImportMatplotlib.pyplot as Plt" "# Two distributions (binomial distribution) # Prerequisites: Independent repetition Test, back-up, only two results # Two distributions

Expected value and varianceThe expected value E (X) of a random variable, also known as an average or mean, is calculated using the following formula, which is used to calculate the expected value of discrete random variables and continuous random

Basic R packages have implemented many of the functions of traditional multivariate statistics, however many of the other packages provided by Crna provide a more in-depth multivariate statistical approach, the following package is mainly divided

http://blog.csdn.net/pipisorry/article/details/51695283This article is mainly about: entropy, joint entropy (joint entropy), conditional entropy (conditional entropy), relative entropy (relative entropy,kl distance), cross-entropy (crosses entropy),

creation and manipulation of vectors C () create vector length () mode () to determine the type of vector rbind () by row combination Vector Cbind () by column

Http://blog.sina.com.cn/s/blog_708637950100se7w.html Sensor Type:The sensor can be divided into different types according to the different working modes of each component of the sensor. The relative and absolute (Inertial) types can be divided

One of the series of R linguistic multivariate analysis: Principal component analysisprincipal component Analysis (Principal, PCA)is a technique for analyzing and simplifying data sets. It transforms the original data into a new coordinate system so

6.1-point estimation and R implementation6.1.1 Moment EstimationThe solution equation function in R:Function and package: functionUniroot () @stats: Solving a unary (nonlinear) equationMultiroot () @rootSolve: given n (nonlinear) equations, solve n