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School: N.C. State
Course: Stat Quality Prod
WrittenAssignment7 1. 8.1 A process is in statistical control with x =20 and s =12. Specifications are at LSL =16 and USL =24. (a) Estimate the process capability with an appropriate process capability ratio. Cp = =.1111 Cpk = = min(.11111, .11111)=.11111
School: N.C. State
Solutions to ST 370 Online Second Exam, Fall 2005 1. .22 = Pr(BC is beaten)* Pr(MTS is beaten)*Pr(M is beaten)= .4*.9*.6=.216 2. 6/9 (9 possible values: (1,1)->X=1, (1,2)->X=2, etc.: 1,2,3,2,4,6,3,6,9 each with prob. 1/9) 3. .874 = Pr(-1.23 < Z < 2.13)=
School: N.C. State
Course: Statistics 311
Statistics 311 Final Exam Definitions Parameter: a summary measure for an entire population Statistic: a summary measure computed from sample data Population: the entire group of units about which inferences will be made Sample: the group of units th
School: N.C. State
Course: Sampling
Surveys are systems for collecting information to describe, compare, and predict attitudes, opinions, values, knowledge, and behavior. Matt Campbell, Richard Couchon, Robert Garland, Rheuben Herbert April 9, 2009 Planning of the Questionnaire Question Wr
School: N.C. State
Course: Sampling
4/14/2009 Presentation Agenda E-MAIL AND INTERNET SURVEYS April 16, 2009 Brief Introduction Construction of E-mail and Internet Surveys Response Rate and Other Problematic Issues Innovations in E-mail and Internet Surveys Privacy Issues in E-mail and Inte
School: N.C. State
ST 370 HW 4 11/27/12 9:30 PM Emily Gaye ST 370, section 001, Fall 2012 Instructor: Renee Moore WebAssign ST 370 HW 4 (Homework) Current Score : 10 / 10 Due : Thursday, September 13 2012 11:59 PM EDT The due date for this assignment is past. Your work can
School: N.C. State
Course: Applied Longitudinal Data Analysis
CHAPTER 1 ST 732, M. DAVIDIAN 1 Introduction and Motivation 1.1 Purpose of this course OBJECTIVE: The goal of this course is to provide an overview of statistical models and methods that are useful in the analysis of longitudinal data; that is, data in th
School: N.C. State
Course: Statistic Theory I
Chapter 4: Multiple Random Variables We study the joint distribution of more than two random variables, called a random vector, such that (X, Y ), (X, Y, Z), (X1 , , Xn ), and the distribution of their functions like X + Y , XY Z, or X1 + X2 + + Xn . 1 Bi
School: N.C. State
Course: Statistic Theory I
Common Families of Distributions The family of distributions: a class of pmfs/pdfs indexed by one or more parameters. For example, N(,1), Unif(a,b). Distributions in one family have a common pdf/pmf form but dierent parameter values. For each distributio
School: N.C. State
Course: Statistic Theory I
Chapter 5 1 Properties of A Random Sample. Basic Concepts of Random Sample Def: The random variables X1 , , Xn are called a random sample of size n from the population f (x), if X1 , , Xn are mutually independent random variables and the marginal pdf or p
School: N.C. State
Course: Statistic Theory I
ST521: Chapter 1 1 Overview Of Probability Probability theory is a branch of mathematics that deals with uncertainty. A random experiment is an experiment for which the outcome can not be predicted with certainty. Probability = chance or the likelihood
School: N.C. State
Course: Introduction To Statistics For Engineers
ST361: Ch1.1 Population and Samples I. What is Statistics? Statistics is the science of _ _. Usually it involves collecting partial information (a sample) about a population, and using it to make generalizations (inference) about the population. Ex. Sue w
School: N.C. State
Course: BUCKNER
ST 810J Term Paper A Survey of 2007 Subprime Financial Crisis Jiangdian Wang Introduction In the summer of 2007, a global financial crisis shocked private banks, hedge funds and other financial institutes around the world. Its negative effect has i
School: N.C. State
Course: Sampling
James Hedges James Jeff Jackson Sarah Likshis Devon Sheppard Introduction Telephone surveying is defined as a systematic collection of data from a sample population using a standardized questionnaire. Today well discuss the History Use of RDD to attain a
School: N.C. State
Course: Sampling
SENSITIVETOPICS NicoleMack,NathanSmith,KrystalStrader,ChristineWu Introduction WhatareSensitiveSubjects? SensitiveSubjects/Topicsarethosedealingwith issuesinwhichwewishtokeepprivate includingreceiptofwelfare,income,alcohol anddruguse,criminalhistory,andso
School: N.C. State
Course: Sampling
432 Sampling Lecture 1 Kenneth H. Pollock Biology, Statistics and Biomathematics North Carolina State University, My Introduction: Australia Rural New South Wales Sydney University: B Sc. Cornell University, Ithaca NY: MS & Ph D. MY SCIENCE PHILOSOPHY Dev
School: N.C. State
Course: Sampling
Lecture 19 Double and Two Phase Sampling Introduction Ratio Estimator Regression Estimator (Very Brief) Stratification and Adjusting for Non Response Cluster Sampling (Very Brief) Ecological Examples Summary Remarks Sampling Rare and Clustered Populations
School: N.C. State
Course: Sampling
Introduction Example on a Transect Small Population Example Relationship to Cluster Sampling Problems with Systematic Random Sampling Variances Cyclic patterns Replicated Systematic Random Sampling Simple random sampling is the basis of our sampling theor
School: N.C. State
Course: Sampling
Lecture 15-16: Cluster and Multi-Stage Sampling Designs Important Group Meeting-Time is getting Short for the first two groups especially. Lecture 15-16 Outline Examples of Nested Multi-Level Sampling Units Cluster and Two-Stage Sampling -Cluster- all sec
School: N.C. State
Solutions to ST 370 Online Second Exam, Fall 2005 1. .22 = Pr(BC is beaten)* Pr(MTS is beaten)*Pr(M is beaten)= .4*.9*.6=.216 2. 6/9 (9 possible values: (1,1)->X=1, (1,2)->X=2, etc.: 1,2,3,2,4,6,3,6,9 each with prob. 1/9) 3. .874 = Pr(-1.23 < Z < 2.13)=
School: N.C. State
Course: Statistics 311
Statistics 311 Final Exam Definitions Parameter: a summary measure for an entire population Statistic: a summary measure computed from sample data Population: the entire group of units about which inferences will be made Sample: the group of units th
School: N.C. State
Statistics 311 Exam 1 Practice Exam NOTE to students: This is the actual exam from a previous semester. It is intended to give you an idea of the type questions the instructor asks and the approximate length of the exam. It does NOT indicate the e
School: N.C. State
Course: Nonlinear Models For Univariate And Multivariate Response
ST 762, TEST SOLUTIONS, FALL 2009 Please sign the following pledge certifying that the work on this test is your own: I have neither given nor received aid on this test. Signature: Printed Name: This test covers material in Chapters 1 12 of the class note
School: N.C. State
Course: Experimental Design
Quiz 1, St 711 Question 1: An experiment is run on hamsters, each in its own cage with an exercise wheel connected to a timer. Average time per hour on the wheel is the response. The treatments are diets, assigned to the cages at random with unequal repli
School: N.C. State
Course: Experimental Design
Test 1, St711, Fall 2010, Dickey v1 Throughout, make the usual assumptions (independent, N(0,) ) on the error terms, but make no other arbitrary assumptions on model parameters. 1. I ran a completely randomized design experiment with three treatment group
School: N.C. State
Course: Stat Quality Prod
WrittenAssignment7 1. 8.1 A process is in statistical control with x =20 and s =12. Specifications are at LSL =16 and USL =24. (a) Estimate the process capability with an appropriate process capability ratio. Cp = =.1111 Cpk = = min(.11111, .11111)=.11111
School: N.C. State
ST 370 HW 4 11/27/12 9:30 PM Emily Gaye ST 370, section 001, Fall 2012 Instructor: Renee Moore WebAssign ST 370 HW 4 (Homework) Current Score : 10 / 10 Due : Thursday, September 13 2012 11:59 PM EDT The due date for this assignment is past. Your work can
School: N.C. State
ST 370 HW 5 11/27/12 9:31 PM Emily Gaye ST 370, section 001, Fall 2012 Instructor: Renee Moore WebAssign ST 370 HW 5 (Homework) Current Score : 10 / 10 Due : Thursday, September 20 2012 11:59 PM EDT The due date for this assignment is past. Your work can
School: N.C. State
ST 370 HW 2 11/27/12 9:28 PM Emily Gaye ST 370, section 001, Fall 2012 Instructor: Renee Moore WebAssign ST 370 HW 2 (Homework) Current Score : 10 / 10 Due : Thursday, August 30 2012 11:59 PM EDT The due date for this assignment is past. Your work can be
School: N.C. State
ST 370 HW 3 11/27/12 9:29 PM WebAssign ST 370 HW 3 (Homework) Current Score : 9 / 10 Emily Gaye ST 370, section 001, Fall 2012 Instructor: Renee Moore Due : Thursday, September 6 2012 11:59 PM EDT The due date for this assignment is past. Your work can be
School: N.C. State
Course: Nonlinear Models For Univariate And Multivariate Response
ST 762, HOMEWORK 1 EXTRA PROBLEM SOLUTIONS, FALL 2009 1. (a) The loglikelihood is n log L = cfw_Yj log f (xj , ) f (xj , ) log Yj !. j=1 Taking derivatives with respect to and setting equal to zero gives the estimating equation n / log L = cfw_Yj f (xj ,
School: N.C. State
Course: Statistic Theory I
ST 521 LAB Solution #10 Prepared by Dong wang and Chen-Yen Lin FALL 2011 5.3 Since Y i =1 or 0 and they are independent and with the same probability p( y i 1 )= 1 F ( ) . Thus n y i is binomial distribution ( n, p 1 F ( ) ) i 1 5.6 a, let Z=X-Y, W=X, the
School: N.C. State
Course: Statistic Theory I
ST 521: Statistical Theory I Solution to Lab Exercise - 9 Prepared by Chen-Yen Lin and Dong Wang Fall, 2011 4.51 (a) P (X/Y t) = P (X tY ) = P (XY t) t 2 if t < 1 if t 1 = EI (XY t) 1 1 2t = EX EY |X I (Y < t/x)|X = EX P (Y t/x) t = EX I (0 < t/x < 1) + 1
School: N.C. State
Course: Statistic Theory I
ST 521 LAB Solution #8 Prepared by Dong wang and Chen-Yen Lin FALL 2011 4.27 Since X and Y are independent normal distribution, the linear combination of them is also normally distributed. By Theorem 4.2.14, U N ( ,2 2 ) , V N ( ,2 2 ) f X ,Y ( x, y ) f X
School: N.C. State
Course: Statistic Theory I
ST 521: Statistical Theory I Solution to Lab Exercise - 7 Prepared by Chen-Yen Lin and Dong Wang Fall, 2011 4.9 P (a X b, c Y d) = P (X b, Y d) P (X b, Y c) P (X a, Y d) + P (X a, Y c) = FX (b)FY (d) FX (b)FY (c) FX (a)FY (d) + FX (a)FY (c) = FX (b)[FY (d
School: N.C. State
Course: Statistic Theory I
ST 521 LAB Solution #6 Prepared by Dong wang and Chen-Yen Lin FALL 2011 3.21 f ( x) 1 1 M X (t ) 2 (1 x ) e tx 1 x 2 dx e tx x 1 x 2 dx 1 x 2 dx 0 0 Thus the moment generating function does not exist. If x is positive, we have e tx x 3.22 (a) E (
School: N.C. State
Course: Statistic Theory I
ST 521: Statistical Theory I Solution to Lab Exercise - 5 Prepared by Chen-Yen Lin and Dong Wang Fall, 2011 1 Let X Hyp(N, M, K ), P (X = x) = K EX = x x=0 K EX (X 1) = x(x x=0 M N M Cx CK x N CK K M N M Cx CK x = N CK x=1 M N M Cx CK x 1) N CK , M (M 1)
School: N.C. State
ST 370-003 Probability and Statistics for Engineers Fall 2013 Professor: Dr. Justin Post - jbpost2@ncsu.edu - (919) 515-0637 Meeting Place/Time: 124 Dabney T/Th 11:45 - 1:00 Course Goals: Office/Hours: Construct basic numeric and graphical summaries of da
School: N.C. State
Course: Intro To Statistic
Dhruv Sharma ST311 Sum-II ST311 Introduction to Statistics Section 001 Summer II 2007, NC State University Instructor: Dhruv Sharma Email: dbsharma@ncsu.edu Website: www4.ncsu.edu/~dbsharma/st311 Course Webpage: http:/courses.ncsu.edu/st311/lec/001
School: N.C. State
Course: Analy Surviv Data
ST 745001: Analysis of Survival Data Spring, 2005 Textbook Lecture notes 1. Survival Analysis: Techniques for Censored and Truncated Data (2nd edition) by John P. Klein and Melvin L. Moeschberger (the website http:/www.biostat.mcw.edu/homepgs/klei
School: N.C. State
ST 372 Spring 2007 Introduction to Statistical Inference and Regression Instructor: Email: Office: Phone: Office hour: Dr. Judy Huixia Wang wang@stat.ncsu.edu Patterson Hall Rm 209 F (919) 513-1661 Wednesdays, 3pm-5pm (or by appointment) Lectur