 National Statistical Service of Greece (NSSG)  Ministry of National Economy, Greece
The statistics collection office of the Greek government. Charts and some graphs of population, health and economic data. More information, including press releases, also available in Greek.
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 National Statistics of Taiwan, the Republic of China
The agency that collects statistics for the government of Taiwan. Includes key socioeconomic figures and a list of publications. The site is also available in Chinese.
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 NationMaster.com  Luke Metcalfe
A website for generating graphs and correlations based on numerical data extracted from the CIA World Factbook, United Nations, World Health Organization, World Bank, World Resources Institute, UNESCO, UNICEF, OECD, and other sources of indicators that
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 Nautilus  Nautilus Ventures LLC
An online and print monthly dedicated "to science and its endless connections to our lives." Each issue contains chapters — essays, investigative reports, blogs, fiction writing, games, videos, graphic stories, and other original content —
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 NCAA Basketball Finals (MSTE)  John Meseke; University of Illinois at UrbanaChampaign (UIUC)
A statistics lesson using data from the NCAA basketball finals.
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 NCTM Standards (Standards 2000)  National Council of Teachers of Mathematics (NCTM)
NCTM's Principles and Standards for School Mathematics is the compilation of the lessons learned and experiences gained over the years since the 1989 Standards were released. The site features include: an online version of the Standards (including illustrations,
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 NECTAR Foundation: New Era Classroom, Technology and Research
A nonprofit foundation specialising in the development and marketing of educational software in the kindergarten to grade 12 program with a focus on mathematics software programs. It also develops and markets print, video, and audio materials for students
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 The Need For Statistical Literacy In Australian Society  Robyn Williams, Jane Watson; Australian Broadcasting Corporation
The Need For Statistical Literacy In Australian Society, a transcript from Ockham's Razor, a weekly radio program. Some misconceptions about statistics, including: the way Australian children interpreted "average" after seeing a Ford Motor Co. ad on TV
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 Net Benefits: the Revolution linking Statistics and ICT  M. F. Fuller, University of Kent at Canterbury, U.K.
Modified versions of some of the articles in the Net Benefits series written by M. F. Fuller, Senior Lecturer in Econometrics and Social Statistics at the Univ. of Kent at Canterbury (U.K.), for the journal Teaching Statistics. Included are: "Welcome
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 Netherlands Society for Statistics and Operations Research (VVS)
Membership information and benefits, awards, and events of interest. Also available in Dutch.
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 Netlib Repository at UTK and ORNL  AT&T Bell Labs, Univ. of Tennessee, Oak Ridge National Laboratory
The Netlib repository contains freely available mathematical and statistical software, documents, and databases of interest to the numerical, scientific computing, and other communities. The repository is maintained by AT&T Bell Laboratories, the
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 New Confidence Interval Applet  R. Webster West, Dept. of Statistics, Univ. of South Carolina
An applet designed to help students understand confidence intervals. Each of the 50 lines on the graph below represents a confidence interval for the mean (assuming known variance). Each interval is based on a sample of size 5 taken from a standard normal
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 New Directions in Pedagogy in Other Courses  Mathematics Education at the Math Forum
Examples of mathematics courses being revised in the light of new approaches to pedagogy: articles and presentations at conferences in probability and statistics; precollege algebra; linear algebra; abstract algebra, and differential equations.
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 New Zealand Mathematics  Ministry of Education, New Zealand
Units and lesson plans organised by level and curriculum strand, in Maori and English, focusing on solving problems. Topics address levels 16 of the New Zealand mathematics curriculum and include probability, statistics, measurement, and geometry.
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 NFL Stats & Research Articles  Roland Beech
Indepth statistical coverage and analysis of the National Football League (NFL). See player stats and ratings by position, and regular season team stats such as drive charts, play call by down, and red zone performance. "Classic" articles include correlation
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 Nils Ahbel  Deerfield Academy, Deerfield, MA
Access Ahbel's Blackboard courses as a guest to preview his teaching resources and download Excel files in algebra, functions, statistics, and trigonometry.
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 Nonlinear Regression Analysis Program  Phillip H. Sherrod
NLREG is a statistical analysis program for Windows 95/98 and Windows NT which performs linear and nonlinear regression analysis and curve fitting. The software package determines the values of parameters for an equation, the form of which you specify,
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 The Normal Curve and Galton's Board  Paul Trow
Describes a mechanical device, invented by the nineteenthcentury mathematician Francis Galton, that illustrates the Central Limit Theorem, by showing how a binomial distribution approximates a normal distribution.
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 The Normal Distribution  Balasubramanian Narasimhan
Normal distributions are a very important class of statistical distributions. All normal distributions are symmetric and have bellshaped density curves with a single peak. Different values of mu and theta yield different normal density curves and hence
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 Northern Ireland Statistics and Research Agency (NISRA)
The department of the United Kingdom government that collects statistics about Northern Ireland. Includes tables and graphs of key socioeconomic statistics, which are available for download as Lotus 123 worksheets; demographic data, available in Lotus
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 Not So Standard Deviations  Peng, Roger; and Parker, Hilary
Podcasts on the latest in data science and data analysis in academia and industry. Audio of conversations, which usually run 50 minutes and date back to October, 2015, have included "Gilmore Girls," "A Gajillion Time Series," "Google is the New Fisher,"
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 NOVA Teachers: Featured Teacher  PBS
Teachers' featured stories of a lesson plan using one of the NOVA films. Lesson titles include: Students Inclined to Study Galileo, Exploring Research Bias, Placing Value on Maya Math, Teaching with Trebuchets, Bridges Form Foundation for Geometry Unit,
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 Now College  Online Math Courses and Tutorials  Now International
An online learning company. Products are designed with video instruction, "realtime" whiteboard handwriting, graphics, animations, graphs, tables, and math notation. A complete highschool math program is planned. Currently, courses in trigonometry
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 NRICH Maths, the Online Maths Club  Univ. of Cambridge, UK
A project that aims to establish a permanent national centre for curriculum enrichment to provide mathematical learning support for very able children of all ages. The learning and enjoyment of mathematics are promoted through an Internet Newsletter and
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 Null Science  Ivars Peterson  Science News Online
A growing number of psychologists charge that their field needs to wean itself from the mindless application of certain statistical practices, especially a technique known as null hypothesis or significance testing, where the investigator typically gathers
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 Number Loving Beagle  Megan Schmidt
Blog by a high school teacher in Minnesota who also serves as the head of her math department. Posts, which date back to September, 2013, have included "Aha for patient problem solving"; "Creating Mathematically Curious Students"; "A Speedy Makeover for
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 Number Loving  Laura ReesHughes and Sharon Derbyshire
Freely downloadable PDFs, Microsoft Word documents, and PowerPoint presentations, organized by UK key stages, strands, and topics. The Number Loving blog offers new approaches for teaching maths and tips for classroom makeovers. Posts, which date back
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 Numberplay  The New York Times
Mathematical, logical and scientific puzzles, with solution "recaps." The posts, by Gary Antonick and Pradeep Mutalik, have included "Surreal Hat Tricks," "The Puzzles of Pickover," "Prime Rib at Hogwarts," "Nim for (a) Change," "Phi  The Magic and the
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 Number Watch  John Brignell
"All about the scares, scams, junk, panics, and flummery cooked up by the media, politicians, bureaucrats, socalled scientists and others who try to confuse you with wrong numbers." A site devoted to the monitoring of the misleading numbers that rain
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 Numeracy in the News  The Mercury/University of Tasmania
Newspaper articles collected from the Tasmanian (Australia) metropolitan daily newspaper, The Mercury, to represent the five areas of the Chance and Data curriculum (Data Collection and Sampling, Data Representation, Chance and Basic Probability, Data
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 The Numerical Algorithms Group (NAG)  Oxford, UK
Products and services; libraries for the solution of mathematical problems: numerical software; statistical software covering all areas of statistical computation; compilers, tools, and code coverters for developers and programmers, symbolic software
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 Numerical Analysis  JeanPierre Moreau
Numerical analysis source code in BASIC, C++, FORTRAN, or Pascal. Program topics include real and complex roots, evaluation of Bessel functions, signal processing, matrices, and statistics.
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 Numerical Methods  Douglas N. Arnold; Mathematics Dept., Penn State University
An extensive list of centers (including online services and search engines), individual libraries, other sites (general and specific), journals, books, online publications, and other resources for numerical methods.
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 Numerical Recipes in C: The Art of Scientific Computing  Books OnLine  Press, Teukolsky, Vetterling, Flannery; Cambridge University Press
An online book available in Adobe Acrobat or PostScript formats that outlines the method of organizing a program, and then provides the methodology and (copyrighted) source code in the C programming language for: linear algebraic equations, interpolation
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 Occupational Outlook Handbook  U.S. Bureau of Labor Statistics (BLS)
Career information and statistics about many different jobs, such as mathematicians. Each outlook includes a description of the nature of the work, working conditions, number of people in a field and sources of employment, training, other qualifications,
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 Occupational Outlook Quarterly Online  U.S. Bureau of Labor Statistics (BLS)
A journal about jobs and careers covering new, emerging, and unusual occupations, training opportunities, salary trends, results of new studies, etc. Includes summaries and excerpts from articles, with full text available for download in PDF format and
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 Office for National Statistics  Government Statistical Service, United Kingdom
The United Kingdom agency that coordinates national statistics. Tables of key social, economic, and environmental data, press releases, catalogue of publications, articles, and a newsletter. Information about the British census, including articles in
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 Oficina Nacional de Estadística  República Dominicana
Información estadística y geográfica de la República Dominicana. Territorio; población; datos por provincia y municipios. (Tables of information about the Dominican Republic, including geography and population, for
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 Omni Calculator  Piotr Malek
Freely offering calculator apps, as well as the code for calculators to customize and embed in your own website. Calculators for math applications include roots and exponents, percentages, proportions, distances in two and three dimensions, and several
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 ONLINE MATH: An Internet Mathematics Program  Larson, Neptune, Falvo; TDLC, a Division of Larson Texts, Inc.
ONLINE MATH is a mathematics tutorial instruction program available through the Internet. Designed to help students improve their math skills in a selfpaced environment, the program is mastery based, customizable, and includes readiness tests, cumulative
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 Online Math Help & Learning Resources
Learn basic concepts behind arithmetic, algebra, geometry, statistics and set theory. Includes some SAT test preparation help, math games, math worksheets, math riddles, math quotes, math mnemonics and math trivia.
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 Online Resources  Georgia Tech School of Math
Syllabi, course notes, problems, and Maple worksheets for single and multivariable calculus, linear algebra, statistics, and a Math for Management course (statistics, probability, sets, and some calculus). The site also contains sample exams for calculus
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 Online Tutor: Math, Science, Computers, Etc.  Morris Roth
Online tutoring in math, physics, chemistry, biology, computer languages, English, and French. Inperson tutoring in Tulsa, OK.
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 OpenEnded Assessment in Math  Cooney, Thomas J.; Sanchez, Wendy B.; Leatham, Keith; and Mewborn, Denise S.
Over 450 openended, fieldtested assessment items, distributed more or less equally among elementary, middle school, and high school grade levels. The questions relate to five major content areas, based on the NCTM Standards: number and operation; probability
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 OpenEnded Math Problems  Gwenn Holtz and Mary Lee Malen, Levering School and the Franklin Institute
An eightmonth slate of openended problems for middle school students to solve in preparation for standardized testing. The authors have composed and selected problems that lend themselves to multiple solution paths, and then organized them into three
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 OpenIntro  David Diez and Chris Barr, CoFounders
The OpenIntro Statistics textbook the inaugural effort from these makers of educational products that "are free, transparent, and lower barriers to education"  comes with data sets for the statistics software package R; normal, t, and chisquare probability
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 Open Middle  Johnson, Nanette; and Kaplinsky, Robert
"Open middle" problems, hints, and answers, all aligned to the Common Core State Standards (CCSS). Introduced by Dan Meyer, these kinds of math challenges have a "closed beginning," meaning that they all start with the same initial problem; a "closed
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 OpenStat4 (OS4)  Bill Miller
A statistics package offering descriptive statistics such as central tendency and variability indexes, xy plots, and frequency distributions; Pearson productmoment correlations and partial correlations; analyses of variance including 1, 2 and 3way
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 OpsResearch  DRA Systems
A collection of Java classes for developing operations research programs and other mathematical applications. The site includes documentation and tutorials, and software download is free. Also features a bookstore and related links.
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 Our Backpack Data: Making Conclusions from Graphs  William Thill
Students match different statistical questions from backpack data to an appropriate visual display. They choose graphs to answer the questions and make welljustified conclusions about each question. As an extension, students may create a new question,
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