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Understanding Confidence Intervals

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Understanding Confidence Intervals

The first issue with confidence intervals is a con-cept known as parameter risk. This risk is not included in the calculation of the confidence in- ... Don’t let the complicated math behind a confidence interval affect your interest in understanding and using this important part of your actuarial

http://www.sigmaactuary.com/download/tt_confidence.pdf

Date added: March 17, 2013 - Views: 1

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9 Hypothesis Testing and Confidence Intervals for Two Populations

227 9 Hypothesis Testing and Confidence Intervals for Two Populations Two Populations What exactly do I mean by two-population hypothesis testing? In many business settings,

http://www.kendallhunt.com/uploadedFiles/Kendall_Hunt/Content/Higher_Education/Uploads/CH09_%20Jones_Text.pdf

Date added: June 16, 2012 - Views: 4

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Using your TI-83/84/89 Calculator: Estimating a Population ...

When the population standard deviation (σ) is not known (as is generally the case), a confidence interval estimate for a population mean ... distributed and/or n ≥ 30 before proceeding to generate any confidence intervals.

http://users.rowan.edu/~schultzl/TI/T_interval_StatI.pdf

Date added: November 11, 2011 - Views: 14

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Chapter 9: Inferences based on Two samples: Confidence ...

Chapter 9: Inferences based on Two samples: Confidence intervals and tests of hypotheses . 9.1 The target parameter _____: difference between two population means ... The two samples are _____and_____selected from the two target population, 2. Both ...

http://www2.fiu.edu/~and/STA3123/studentnote/chapter9studentnote.pdf

Date added: May 16, 2013 - Views: 10

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Confidence Interval Calculation for Binomial Proportions

P08 - 2008 . Confidence Interval Calculation for Binomial Proportions . Keith Dunnigan . Statking Consulting, Inc. Introduction: One of the most fundamental and common calculations in statistics is the estimation of a

http://www.mwsug.org/proceedings/2008/pharma/MWSUG-2008-P08.pdf

Date added: October 19, 2011 - Views: 17

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Guardbanding With Confidence - Fluke Corporation

Guardbanding With Confidence David Deaver Fluke Corporation Everett, Washington ABSTRACT: Setting test limits different than specification limits influences the risk of accepting ... confidence intervals from ±1σ to ±3σ. † K TUR =−1 1

http://assets.fluke.com/appnotes/Calibration/ddncsl94.pdf

Date added: May 26, 2012 - Views: 4

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Bandolier: What are confidence intervals and p - values ?

What are confidence intervals? Confidence intervals provide different information from that arising from hypothesis tests. Hypothesis testing produces

http://www.medicine.ox.ac.uk/bandolier/painres/download/whatis/What_are_Conf_Inter.pdf

Date added: December 2, 2011 - Views: 33

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Choosing Sample Sizes.ppt

Power vs Sample Size, Z test compared to t-test with a 1 Sigma shift Standard Deviation Sample Sizes yUse Variance (square of Standard Deviation) and the ... Capability Index Confidence Intervals yThe following approximation is commonly used:

http://asqbuffalo.com/wp-content/uploads/2011/10/3a-SampleSize.pdf

Date added: September 10, 2012 - Views: 75

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Intermediate Statistics - worldtracker.org Welcome to Earth

Dummies (or your introductory statistics course) leaves off, and keeps you ... over confidence intervals and hypothesis tests for one and two population means and one and two population proportions. Your instructor hopefully

http://worldtracker.org/media/library/How-To/For%20Dummies%20eBook%20Collection/Intermediate%20Statistics%20for%20DUMmIES.pdf

Date added: July 31, 2013 - Views: 2

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Statistics for Dummies - Amazon Web Services

Statistics for Dummies Rumsey, Deborah J. PhD ISBN-13: 9780470911082 Table of Contents ... Guesstimating and Hypothesizing with Confidence. Chapter 12: Leaving Room for a Margin of Error. Chapter 13: Confi dence Intervals: Making Your Best Guesstimate. Chapter 14: Claims, Tests, and Conclusions.

http://media.matthewsbooks.com.s3.amazonaws.com/documents/tocwork/047/9780470911082.pdf

Date added: June 30, 2014 - Views: 2

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Useful Stata Commands - Rensselaer Polytechnic Institute

G1. Confidence Intervals ... Variable Lists with Automated Category Dummies and Interactions Stata (beginning with Stata 11) allows you enter variable lists that automatically create dummies for categories as well as interaction variables.

http://homepages.rpi.edu/~simonk/pdf/UsefulStataCommands.pdf

Date added: November 27, 2011 - Views: 107

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Using Your TI-83/84 Calculator: Estimating a Population ...

Using Your TI-83/84 Calculator: Estimating a Population Proportion Dr. Laura Schultz The 1-PropZInt command is used to construct a confidence-interval estimate of a population

http://users.rowan.edu/~schultzl/TI/1PropZInterval.pdf

Date added: November 11, 2011 - Views: 15

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Intermediate Statistics For Dummies (For Dummies (Math ...

where Statistics For Dummies left off, this straightforward, easy-to-follow book guides you beyond Central Limit Theorem and hypothesis tests and ... testing, confidence intervals, multiple regressions, nonparametric methods,

http://textbooks-make-you-smart.info/wp-content/uploads/pdfs/Intermediate%20Statistics%20For%20Dummies%20For%20Dummies%20Math%20%20Science%20by%20Deborah%20Rumsey%20-%20Excellent%20For%20Reviewers%20And%20Newbies.pdf

Date added: August 30, 2014 - Views: 1

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Learn

Dummies, Probability For Dummies, and Statistics Workbook For Dummies. Her passions, besides teaching, ... Chapter 7 deals with confidence intervals, used when you want to make estimates involving one or two population means or proportions using a sample of data.

http://vacutron.com/statistic_pour_honey/Statistics%20Essentials%20Dummies.pdf

Date added: March 12, 2013 - Views: 110

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Bootstrapping Made Easy: A Stata ADO File - York University

a list of provincial dummies, education dummies, age, ... label var _low`level' "Bootstrap lower 95% confidence interval assuming a normal distribution"; ... * The confidence intervals below are based on the bootstrapped distribution

http://www.yorku.ca/nbuckley/papers/Bootstrapping_for_Regressions_in_Stata_031017.pdf

Date added: February 10, 2012 - Views: 40

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How Smart is my Dummy? Time Series Tests for the Influence of ...

dummies are insignificant and the alternative is that politics “matters”. ... location and confidence intervals for intercept shifts in the sample via time series techniques. In particular, we employ the methods recently developed by Bai & Perron

http://faculty-staff.ou.edu/G/Kevin.B.Grier-1/smartdum.pdf

Date added: April 24, 2012 - Views: 7

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Simple Random Sampling – Formula Sheet - University of Kentucky

Simple Random Sampling – Formula Sheet . Mean ( ) Variance ( ) Standard . Deviation (s) Coefficient of Variation (CV) Standard Error ( ) Sampling with Replacement ... Confidence Intervals (95% confidence interval has alpha = 0.05) where, t (2-tailed) has . n

http://www.uky.edu/~jmlhot2/courses/for480/Forest%20Sampling%20Forumla%20Sheet.pdf

Date added: December 9, 2011 - Views: 22

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GraphPad Prism Statistics Guide - Home - graphpad.com

Confidence intervals 32 © 2007 GraphPad Software, inc. Prism 5 Statistics Guide www.graphpad.com confidence interval instead of 95%. The 90% CI for difference in eradication rate extends from -5.9% to 8.4%. Since we are less

http://www.graphpad.com/downloads/docs/Prism5Stats.pdf

Date added: October 21, 2011 - Views: 73

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Fisher’s least significant difference (LSD)

Fisher’s least significant difference (LSD) Procedure: 1. Perform overall test of H : !" ... Ł confidence intervals instead of hypothesis tests are calculated with the usual methods for contrasts: ++CC „> = / 3† 4† Î# 88 # 34! 11

http://www.webpages.uidaho.edu/~brian/stat401ch9_02.pdf

Date added: December 21, 2011 - Views: 21

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Intertemporal Choice and Inequality A. Deaton and C. Paxson ...

Regression of Var(log(consumption)) on age dummies, cohort dummies and quarter dummies Age effect: coefficient estimates for age dummies Confidence intervals calculated using standard error estimates corrected for heteroskedasticity. Empirical Evidence (3) ...

http://www.econ.yale.edu/~cru2/econ731_files/0418-SW.pdf

Date added: September 1, 2013 - Views: 1

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Regression — Dummy variables - University at Albany, SUNY

Note that any of the dummies having the value one implies the others have the value zero. The dummy ... Obtaining confidence intervals for the regression mean for particular values of the independent variables

http://www.albany.edu/~po467/EPI553/Fall_2006/dummy_variables.pdf

Date added: July 25, 2013 - Views: 3

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Guide to Using JMP in Statistics 101 - Iowa State University

Guide to Using JMP in Statistics 101 . This instruction sheet gives you some of the basic commands and instructions for analyzing data in Statistics 101 using JMP. ... hypothesis test and a confidence interval for the difference in the population

http://streaming.stat.iastate.edu/%7Estat101/JMPGuide.pdf

Date added: February 1, 2012 - Views: 10

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Reference Manual for Statistical Software: A gentle overview ...

Concept 6 – Confidence Intervals 318 Minitab Lagniappe 323 7. SAS ... “Statistical Computing for Dummies”. It is not our intention to use this manual to teach statistical

https://analytics.kennesaw.edu/~jpriestl/STAT3010/Reference%20Manual%20for%20Statistical%20Software.pdf

Date added: July 9, 2014 - Views: 1

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Statistics

confidence intervals † Critique and analyze data from polls and experiments s! ™ n Open the book and find: ... Dummies is a global leader in how-to information. Now you can get the same great Dummies information in an App. With

http://download.e-bookshelf.de/download/0000/5881/72/L-G-0000588172-0002361976.pdf

Date added: September 3, 2014 - Views: 1

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Statistics II for Dummies

Statistics II for Dummies by Deborah J. Rumsey The ideal supplement and study guide for students preparing for advanced ... Y is often about data analysis of variance confidence intervals. Sometimes they leave empty spaces and practical examples ideal supplement

http://zpcpdf.littlecountryfarmstore.com/statistics-ii-for-dummies-deborah-73162724.pdf

Date added: October 22, 2014 - Views: 1

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Calculating Statistical Significance and Confidence Intervals

5/18/04 1 Calculating Statistical Significance and Confidence Intervals Bioterrorism Epidemiology Module 12 Missouri Department of Health And Senior Services

http://bioterrorism.slu.edu/bt/products/bio_epi/scripts/mod12.pdf

Date added: December 1, 2011 - Views: 34

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Conditional confidence intervals for the equity premium and ...

95% confidence intervals for these parameters conditional on a theoretical dividend model. The monthly samples are considered to have a break after 1981, as deemed in the literature and this turns out to be appropriate.

http://www.tandfonline.com/doi/pdf/10.1080/09603100701413239

Date added: October 22, 2014 - Views: 1

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Using StatCrunch (www.calvin.edu/go/statcrunch)

Using StatCrunch (www.calvin.edu/go/statcrunch) 1. In general, this package is far easier to use than many ... hypothesis testing: (See the information by confidence intervals to get the data ready for analysis.) Select hypothesis testing instead of confidence interval. Specify ...

http://www.calvin.edu/~rpruim/courses/m143/StatCrunch/UsingStatcrunch.pdf

Date added: February 11, 2012 - Views: 38

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Minitab Reference Manual - Kennesaw State University

Concept 6 – Confidence Intervals 71 . 3 Developed and maintained by the Center for Statistics and Analytical Services of Kennesaw State University These ... “Statistical Computing for Dummies”. It is not our intention to use this manual to teach statistical concepts1 ...

https://analytics.kennesaw.edu/~jpriestl/STAT3010/Minitab%20Manual.pdf

Date added: July 25, 2014 - Views: 4

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A Note on Observation-Specific Dummies and Logit Analysis

Observation-specific dummies and logit analysis 415 The first equation in (4) implies that UA = 0, where UA is the ... confidence intervals, Journal of Econometrics, 4, pp. 393-397. This content downloaded from 207.46.13.103 on Fri, ...

http://www.jstor.org/stable/2987795

Date added: December 11, 2013 - Views: 3

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Dummies

repeated before dummies can be recom-mendedforthis purpose.Ifdummysuckingis protectivethenit is oneofseveralfactorsthat mayexplainthehighermortalityfromSIDSin NewZealandthaninothercountries,andmay also explain in part the regional variation withinNewZealand.

http://adc.bmj.com/content/68/4/501.full.pdf

Date added: June 28, 2013 - Views: 3

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Deborah J. Rumsey, PhD - Dandelon.com

confidence intervals / • Critique and analyze data from polls and experiments Deborah J. Rumsey, PhD ... Statistics For Dummies, 2nd Edition Chapter 7: Going by the Numbers: Graphing Numerical Data 103 Handling Histograms 103 Making a histogram 104

http://www.dandelon.com/servlet/download/attachments/dandelon/ids/CH00180B8DCBCF8D60B51C1257A9F004D67EC.pdf

Date added: April 1, 2014 - Views: 1

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Lecture 1: The Classical Linear Regression Model - UCSB Economics

t tests, confidence intervals, and p-values for individual regression ... null hypothesis, ... by a polynomial or a set of dummies (step function) -X variables are often correlated with each other. In consequence, the

http://www.econ.ucsb.edu/~pjkuhn/AEASTP/Lecture%20Notes/4_OLSHypothesisTesting.pdf

Date added: October 25, 2012 - Views: 5

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Appendix Figure A The effects over time of the collapse of ...

The figure shows coefficients and 95% confidence intervals on interactions of the year dummies with Western (Panel A) or ... The figure shows coefficients and 95% confidence intervals on interactions of the year dummies with Western (Panel A) or Communist (Panel B) translations in Soviet ...

http://web.stanford.edu/~ranabr/AS_Appendix.pdf

Date added: September 12, 2014 - Views: 1

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Paired-samples t test Also known as the Correlated-samples ...

Also known as the Correlated-samples and Dependent-samples t-test 1. Purpose ... Confidence Intervals Since the null hypothesis usually specifies no difference between group means, H 0: ...

http://www.bwgriffin.com/gsu/courses/edur8131/notes/Notes5c_paired_ttest.pdf

Date added: May 2, 2013 - Views: 6

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PRACTICE PROBLEMS FOR BIOSTATISTICS

BIOSTATISTICS DESCRIBING DATA, THE NORMAL DISTRIBUTION 1. ... SAMPLING DISTRIBUTIONS, CONFIDENCE INTERVALS Investigator A takes a random sample of 100 men age 18-24 in a community. Investigator B ... 95% confidence interval (CI) ...

http://www.biostat.jhsph.edu/~iruczins/teaching/practice/eg.pdf

Date added: December 12, 2011 - Views: 65

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Bootstrap: A Statistical Method - Rutgers University

Bootstrap confidence intervals in nonparametric regression. Ann. Stat . 20, 695- 711. Hall, P. (1992). THE BOOTSTRAP AND EDGEWORTH EXPANSION . Springer Verlag, N.Y. Hall. P. (1988). Theoretical comparison of bootstrap confidence intervals (with discussions). Ann. ...

http://stat.rutgers.edu/~mxie/rcpapers/bootstrap.pdf

Date added: September 29, 2014 - Views: 1

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cindex – Computing indices of cleavage strength and ...

confidence intervals are estimated by simulating the distribution of the regression coefficients. Syntax cindex modelname depvar indepvars ... three dummies for the groups 2 to 4, the group 1 being the reference category), the indices of

http://www.romain-lachat.ch/software/cindex.pdf

Date added: December 13, 2013 - Views: 2

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Epidemiology for Dummies - International Chiropractors ...

P-values and Confidence Intervals (CI) Frequency Distribution N=75 patients per group. Frequency Distribution: Percentages and Means Raw data <18 yrs 19-35 yrs 36-55 yrs >55 yrs Mean age (SD) ... Epidemiology for Dummies Author: Michael Schneider

http://www.icapediatrics.com/files/research_81-108.pdf

Date added: November 27, 2013 - Views: 4

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VALUE AT RISK (VAR) - NYU Stern | NYU Stern School of ...

2 The 95% confidence intervals translate into 1.96 standard deviations on either side of the mean. ... If we assume a normal distribution, we can now specify the potential value at risk at a 90% confidence interval on this forward contract to be $ 173,855 for a day.

http://pages.stern.nyu.edu/~adamodar/pdfiles/papers/VAR.pdf

Date added: December 22, 2011 - Views: 76

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DRILL AND CEREMONIES F DUMMIES - Brigham Young University

1 DRILL AND CEREMONIES FOR DUMMIES COMPILED, ABRIDGED, AND EDITED BY CADET ANDREW VILLAGRAN WHAT IS THIS MANUAL? During Winter semester of 2009, I, Cadet Andrew Villagran, served as a training officer in our

http://afrotc.byu.edu/sites/default/files/files/Drill%20And%20Ceremonies%20For%20Dummies%20(Small%20Text).pdf

Date added: March 2, 2013 - Views: 8

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12. CONFIDENCE INTERVALS FOR Remember that s is the square ...

CONFIDENCE INTERVALS FOR THE MEAN, UNKNOWN VARIANCE If the population standard deviation σis unknown, as it usually ... Remember that s is the square root of the sample variance, There are two cases to consider: “Large Sample” and “Small Sample”.

http://pages.stern.nyu.edu/~churvich/MBA/Handouts/12-CI(3).pdf

Date added: May 13, 2012 - Views: 5

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The Basic Practice of Statistics

CHAPTER 14 Confidence Intervals: The Basics 343 Estimating with confidence 344 ... The Basic Practice of Statistics (BPS) is an introduction to statistics for college and university students that emphasizes balanced content, working with real data, and

http://virtual.yosemite.cc.ca.us/jcurl/Math134%204%20PDF%20Files/TOC.pdf

Date added: December 12, 2011 - Views: 985

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SAS and STATA Software Tutorial - University of Georgia

Creating dummies Dummy variables are ... confidence intervals, etc. a. Linear regression SAS PROC procedure lets to do OLS estimation using a simple command ... In SAS you can easily test single or joint hypothesis after you successfully complete the estimation.

http://georgiastats.uga.edu/c4610/stata_sas_guide.pdf

Date added: August 15, 2013 - Views: 55

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Getting Started with MegaStat - McGraw-Hill Education

Confidence Intervals / Sample Size For each of the dialog boxes confidence levels of .99, .95, or .90 may be selected by the dropdown arrow or you may type in any other value. Confidence interval – mean Confidence interval – p

http://highered.mheducation.com/sites/dl/free/0070951640/354829/GettingStarted.PDF

Date added: July 18, 2014 - Views: 1

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Version 4.0 Statistics Guide - GraphPad Software

Statistical Principles .....9 1. Introduction to Statistical Thinking ... calculate confidence intervals when calculating nonparametric tests. If the distribution is clearly not bell-shaped, consider transforming the values (perhaps to

http://www.graphpad.com/manuals/Prism4/StatisticsGuide.pdf

Date added: November 26, 2011 - Views: 224

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A Minimum of Rivalry: Evidence from Transition Economies on ...

2 The vertical lines are 95% confidence intervals from a simple least squares regression of log sales growth on three category dummies (monopolist, 1-3 competitors, >3 competitors) and no constant. 3 competition on managerial and work-force motivation, and its effects on the resources

http://deepblue.lib.umich.edu/bitstream/handle/2027.42/40056/wp670.pdf?sequence=3

Date added: November 28, 2013 - Views: 3

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Globalisation or Regionalisation? A New Approach to Measure ...

dummies, industry‐of‐completion dummies and year dummies. ... 95 percent confidence intervals ofyear dummies. The observations (6,351) are weighted by final output. 0.02.04.06.08 1995 1997 1999 2001 2003 2005 2007 2009 2011 year ub2/lb2 beta.

http://www.rug.nl/research/ggdc/workshops/eframe/slides/session7_devries.pdf

Date added: December 13, 2013 - Views: 3

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The missing link: PROC GENMOD - NESUG | Northeast SAS Users Group

confidence intervals for a binomial model. This paper will include a brief introduction to generalized linear models theory, along with suggestions for ... PROC GENMOD fits a generalized linear model to the data by maximum likelihood estimation, and estimates

http://www.nesug.org/Proceedings/nesug99/po/po140.pdf

Date added: October 30, 2011 - Views: 14

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Confidence Intervals - Arkansas State University

CONFIDENCE INTERVALS 8.3 Confidence Interval, Single Population Mean, Standard Deviation Unknown, Student-T3 In practice, we rarely know the population standard deviation. In the past, when the sample size was large, this did not present a problem to statisticians.

http://myweb.astate.edu/sbounds/Statistics_AP/5%20Week%205/ELAD_6773_WEEK_05_READING_02_IllowskyCh8ConfidenceIntervals.pdf

Date added: March 3, 2012 - Views: 19