'Random variables' diaporamas de présentation

Random Variable. A random variable X is a function that assign a real number, X ( ζ ), to each outcome ζ in the sample space of a random experiment. Domain of the random variable -- S Range of the random variable -- S x

Outline: Independence. Odds ratios. Random variables. Distribution function, pmf, density. Expected value . Independence: P(B | A) = P(B) (and vice versa) [so, when independent, P(A&B) = P(A)P(B|A) = P(A)P(B).] Reasonable to assume the following are independent:

Chapter 6 Introduction to Formal Statistical Inference Inferential Statistics Two areas of statistics: Descriptive Statistics Inferential Statistics Some Terminology Quantities of a population are called parameters and are typically denoted by Greek letters

STATISTICS for the Utterly Confused , 2 nd ed. SLIDES PREPARED By Lloyd R. Jaisingh Ph.D. Morehead State University Morehead KY Part 1 DESCRIPTIVE STATISTICS Chapter 1 Graphical Displays of Univariate Data Outline Do I Need to Read This Chapter?

BONUS ANSWER – Notes 2.

RANDOM VARIABLES, EXPECTATIONS, VARIANCES ETC. Variable. Recall: Variable: A characteristic of population or sample that is of interest for us. Random variable: A function defined on the sample space S that associates a real number with each outcome in S. DISCRETE RANDOM VARIABLES.

ECON 4550 Econometrics Memorial University of Newfoundland. Review of Probability Concepts. Appendix B. Adapted from Vera Tabakova’s notes . Appendix B: Review of Probability Concepts. B.1 Random Variables B.2 Probability Distributions

SIMULATION MODELING AND ANALYSIS WITH ARENA T. Altiok and B. Melamed Chapter 7 Input Analysis. Input Analysis Activities. Input Analysis activities consist of the following stages: Stage 1: data collection Stage 2: data analysis Stage 3: modeling time series data

Ch. 6 The Normal Distribution. A continuous random variable is a variable that can assume any value on a continuum (can assume an uncountable number of values) thickness of an item time required to complete a task temperature of a solution height, in inches

2806 Neural Computation Self-Organizing Maps Lecture 9. 2005 Ari Visa. Agenda. Some historical notes Some theory Self-Organizing Map Learning Vector Quantization C onclusions . Some Historical Notes . Local ordering (von der Malsbyrg, 1973)

Option Pricing under ARMA Processes Theoretical and Empirical prospective. Chou-Wen Wang. Astract.

Chi-Square Test. A fundamental problem is genetics is determining whether the experimentally determined data fits the results expected from theory (i.e. Mendel’s laws as expressed in the Punnett square).

Probability Review. (many slides from Octavia Camps). Intuitive Development. Intuitively, the probability of an event a could be defined as:. Where N(a) is the number that event a happens in n trials. More Formal:. W is the Sample Space: Contains all possible outcomes of an experiment

Random Variables & Entropy: Extension and Examples. Brooks Zurn EE 270 / STAT 270 FALL 2007. Overview. Density Functions and Random Variables Distribution Types Entropy. Density Functions. PDF vs. CDF PDF shows probability of each size bin

Chapter 6 Continuous Random Variables. Continuous Probability Distributions The Uniform Distribution The Normal Probability Distribution. Continuous Probability Distributions. A continuous random variable can assume any value in an interval on the real line or in a collection of intervals.

Random-Packing Dynamics in Granular Flow. Martin Z. Bazant Department of Mathematics, MIT. The Dry Fluids Laboratory @ MIT Students: Chris Rycroft, Ken Karmin, Jeremie Palacci, Jaehyuk Choi (PhD ‘05) Collaborators: Arshad Kudrolli (Clark University, Physics)

Lecture 7 Multiple Regression & Matrix Notation. Quantitative Methods 2 Edmund Malesky, Ph.D., UCSD. Order of Presentation. 1. Review of Variance of Beta Hat 2. Review of T-Tests 3. Review of Quadratic Equations 4. Introduction to Multiple Regression 5. The Role of Control Variables

Incorporating Language Modeling into the Inference Network Retrieval Framework. Don Metzler. Motivation. Great deal of information lost when forming queries Example: “ stemming information retrieval ” InQuery informal ( tf.idf observation estimates)

Dealing with Spatial Autocorrelation. Spatial Analysis Seminar Spring 2009. Spatial Autocorrelation Defined.

CHAPTER 4 EXPECTATION. CHAPTER 4. Overview. ● The Expectation of a R. V. ● Properties of Expectation ● Variance ● Moments ● The Mean and the Median ● Covariance and Correlation ● Conditional Expectation ● The Sample Mean. Section 4.1 The Expectation of a Random Variable.