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We demonstrate a few common and essential public health functions using SAS Viya. Our goal is to show the art of the possible within the realm of accessibility.
The fundamental operations on sets are union, intersection, and set difference, all of which are supported directly in the SAS IML language. While studying another programming language, I noticed that the language supports an additional operation, namely the symmetric difference between two sets. The language also supports query functions to
The "Teacher’s Corner" of The American Statistician enables statisticians to discuss topics that are relevant to teaching and learning statistics. Sometimes, the articles have practical relevance, too. Andersson (2023) "The Wald Confidence Interval for a Binomial p as an Illuminating 'Bad' Example," is intended for professors and masters-level students in
Vous vous rappelez ce premier jour du reste de votre vie professionnelle ? Vous avez fini les cours, les examens, ces années d’organisation libre. Tout d’un coup, vous devez intégrer une entreprise. Comprendre le fonctionnement du monde corporate, avec toutes ses particularités. Cela peut être source d’angoisse – et c’est la
A previous article discusses rank correlation and lists some advantages of using rank correlation. However, the article does not show examples where an analyst might prefer to report the rank correlation instead of the traditional Pearson product-moment correlation. This article provides three examples where the rank correlation is a better
I recently discussed introductory programming with a colleague who teaches Python at a university. He told me about the following introductory programming assignment: Let N be an integer parameter in the range [1, 9]. For each value of N, find all pairs of one-digit positive integers d1 and d2 that
A data analyst wanted to estimate the correlation between two variables, but he was concerned about the influence of a confounding variable that is correlated with them. The correlation might affect the apparent relationship between main two variables in the study. A common confounding variable is age because young people
In a previous article about Markov transition matrices, I mentioned that you can estimate a Markov transition matrix by using historical data that are collected over a certain length of time. A SAS programmer asked how you can estimate a transition matrix in SAS. The answer is that you can
Most homeowners know that large home improvement projects can take longer than you expect. Whether it's remodeling a kitchen, adding a deck, or landscaping a yard, big projects are expensive and subject to a lot of uncertainty. Factors such as weather, the availability of labor, and the supply of materials,
A previous article describes the metalog distribution (Keelin, 2016). The metalog distribution is a flexible family of distributions that can model a wide range of shapes for data distributions. The metalog system can model bounded, semibounded, and unbounded continuous distributions. This article shows how to use the metalog distribution in
Happy Pi Day! Every year on March 14th (written 3/14 in the US), people in the mathematical sciences celebrate "all things pi-related" because 3.14 is the three-decimal approximation to π ≈ 3.14159265358979.... Modern computer methods and algorithms enable us to calculate 100 trillion digits of π. However, I think it
Undergraduate textbooks on probability and statistics typically prove theorems that show how the variance of a sum of random variables is related to the variance of the original variables and the covariance between them. For example, the Wikipedia article on Variance contains an equation for the sum of two random
A SAS programmer asked for help to simulate data from a distribution that has certain properties. The distribution must be supported on the interval [a, b] and have a specified mean, μ, where a < μ < b. It turns out that there are infinitely many distributions that satisfy these
Origem e benefícios do Laboratório Científico criado pelo SAS, na Faculdade de Ciências da Universidade de Lisboa. No final do ano passado, o SAS Portugal anunciou a criação de um laboratório científico - designado SAS-FCUL Lab - na FCUL - Faculdade de Ciências da Universidade de Lisboa, com o objetivo
SAS programmers love to make special graphs for Valentine's Day. In fact, there is a long history of heart-shaped graphs and love-inspired programs written in SAS! Last year, I added to the collection by showing how a ball bounces on a heart-shaped billiards table. This year, I create a similar
This article is about how to use Git to share SAS programs, specifically how to share libraries of SAS IML functions. Some IML programmers might remember an earlier way to share libraries of functions: SAS/IML released "packages" in SAS 9.4m3 (2015), which enable you to create, document, share, and use
SAS supports the ColorBrewer system of color palettes from the ColorBrewer website (Brewer and Harrower, 2002). The ColorBrewer color ramps are available in SAS by using the PALETTE function in SAS IML software. The PALETTE function supports all ColorBrewer palettes, but some palettes are not interpretable by people with color
Did you know that about 8% of the world's men are colorblind? (More correctly, 8% of men are "color vision deficient," since they see colors, but not all colors.) Because of the "birthday paradox," in a room that contains eight men, the probability is 50% that at least one is
I previously discussed how to use the PUTLOG statement to write a message from the DATA step to the log in SAS. The PUTLOG statement is commonly used to write notes, warnings, and errors to the log. This article shows how to use the PRINTTOLOG subroutine in SAS IML software
2023年を迎えて間も無く1ヶ月が経とうとしていますが、皆様はどのよう新年のスタートをされましたでしょうか。With コロナに向けた取り組みが社会的には広がり、自らが管理する時間が増えた中で、質の良い学習時間を確保することは社会人・学生問わず大変重要なことかと思います。 さて、SASでは学習および教育を目的とする方向けに、SAS® OnDemand for Academics (ODA) というアナリティクス・ソフトウェアを無料で提供しています。実は、このSAS ODAですが昨年末にログイン画面のアップグレードが行われ、提供されている各種機能へのアクセス方法がわかりやすくなりました。このブログ記事では、アップグレード後の SAS ODAについて紹介していきます。 ①ホーム画面（中央） 画面中央には大きく3つのセクションがあり、それぞれ下記の内容が提供されています。 Code with SAS® Studio すべての教員・学生・個人学習者を対象として、Webサイトにアクセスするだけで使用可能です 提供されている”タスク”からGUI的にSASコードを生成可能です（もちろん自分でコーディングすることも可能） SAS Studio上にプログラムファイルの新規作成、既存ファイルのアップロードが可能です（最大5GB） アクセス可能なSASソフトウェア一覧： SAS/STAT® Base SAS® SAS/IML® SAS/OR® SAS/QC® SAS/ETS® Learn SAS Programming Programming 1, Statistics 1といった統計学やプログラミングに関するいくつかのe-learningや、動画教材を提供しています SASソフトウェアや統計解析・機械学習を中心とした基礎的な知識、スキルをe-learningを通じて習得可能なオンライン学習プラットフォームSAS Skill Builder for Studentsを学生を対象として提供しています（大学ドメインのアドレスが必要） SASの認定資格に関するガイドをていきょうしています Collaborate with SAS Communities いくつかのSASに関連するコミュニティ情報が掲載されています プログラミングや解析にあたっての疑問点、Tipsを共有し、世界中のSASユーザーからコメントをもらうことが可能です ②ホーム画面（右） 初期状態では次の5つのアイコンが表示されます。 Files
Many experienced SAS programmers use the PUT statement to write messages to the log from a DATA step. But did you know that SAS supports the PUTLOG function, which is another way to write a message to the log? I use the PUTLOG statement in the DATA step for the
A previous article shows that you can use the Intercept parameter to control the ratio of events to nonevents in a simulation of data from a logistic regression model. If you decrease the intercept parameter, the probability of the event decreases; if you increase the intercept parameter, the probability of
In a previous article, I presented some of the most popular blog posts from 2022. In general, popular articles deal with elementary topics that have broad appeal. However, I also write articles about advanced topics. The following articles didn't make the Top 10 list, but they deserve a second look.
Thank you to my co-author Raymond Thomas for his assistance on this post. Learn more about the SAS Certified Specialist: Administration of SAS Viya and how to prepare. Certification overview SAS is pleased to announce a new SAS Viya Administration certification. Recognizing the growing need of cloud computing and Kubernetes,
Last year, I wrote almost 90 articles for The DO Loop blog. My most popular articles were about SAS programming, data visualization, statistics and data analysis, and matrix computations. If you missed these articles when I published them—or if you want to read them again!— here is the "Reader's Choice
SAS Explore was created by technologists for technologists, and has more than 100 free SAS training sessions. Here are a few top picks!
A colleague posted a Christmas-themed code snippet that shows how to use the DATA step in SAS to output all the possible ways that Santa can hitch up a team of reindeer to pull his sled. The assumption is that Rudolph must lead the team, and the remaining reindeer are
社会でのデータ活用が進むにつれ、それを推進する人材の必要性が増しています。データ活用人材、アナリティクス人材、データサイエンティスト、呼び方や役割はさまざまですが、そのスキルの根底にあるのは、「データリテラシー」です。データリテラシーとは、世界で起こっているさまざまなことを理解するために、データと対話できることを指します。データの有用性を見極め、信頼性を問い、意味を見出し、その洞察を意思決定に役立て、洞察を他者に伝えることができる一連のスキルです。内閣府、文部科学省、経済産業省は、大学における「リテラシーレベル」の数理・データサイエンス・AI教育プログラムについて、認定制度をはじめようとしています。 SASは、学生向けにデータサイエンスを学べる SAS Skill Builder for Students を無料で提供しています。Skill Builder for Students の e-Learning のなかに、データサイエンスを学ぶ最初のコースとして、Data Literacy Essential があります。このコースでは、身近な例を取り上げ、段階を踏んでわかりやすくデータリテラシーについて学ぶことができます。 SASは、アナリティクスが個人や組織の意思決定のために活用されるものであることを意識し、製品やサービスを展開しています。この Data Literacy Essential のコースでも、意思決定の際にデータとどう向き合えばよいのか、その理解のためのファースト・ステップを提供します。よく統計学の初級コースで、「まず平均や分散を計算してみましょう」という教材がありますが、実は、それ以前に理解すべきことがあります。なぜデータを見る必要があるのか、どのようにデータを集めるのか、そのデータはどういう性質を持っているのか、という疑問と、それらを知ろうとする姿勢が必要です。 このコースは6つのモジュールで構成されます。 Why Data Literacy Matters ... WebやSNSなどで出会うさまざまなデータを例にデータリテラシーの重要性を学びます。 Data Literacy Practices ... 商品の購入を例にデータリテラシーの実践を学びます。 Identifying Reliable Data ... ある家族の新型コロナ感染予防の取り組みを例に信頼できるデータの収集について学びます。 Discovering the Meaning of Data ... 新型コロナの影響を受けたビジネスを例にデータから知見をどのように得られるのかを学びます。 Making Data-informed Decisions ...
A previous article describes how to use SAS IML software to construct common covariance structures that are encountered in mixed models. Each covariance matrix has several parameters, and you want to construct a matrix for any choice of the parameters. After you have constructed the covariance matrix, you can use
The landscape of supply chains has changed rapidly due to unforeseen disruptions. These changes include supply chain bottlenecks, inflation and geopolitical activities across retail and consumer goods industries. Retail supply chains are under immense pressure to keep up with these rapid changes. Innovators have been quick to take advantage of
