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Vectorized Computations.mp4 duration 9 minutes 8 seconds Vectorized Computations.mp4 Vectorized Computations.mp4	Vectorized Computations.mp4 In R, loops are often not the most efficient way to do repetitive calculations. Rather than doing the calculations for each value of a variable it is much more efficient to organize the values of… literature educational equipment course books computer languages programming books learning materials ifelse() language programming languages for loop software nonfiction literature system.time() actors in theatre film and tv computers loops telecommunications equipment subscripts asia From Daniel Hall 65 plays 0 Copyright I created all of this content
Repetitive Execution - Part 2 (repeat and while… duration 6 minutes 1 second Repetitive Execution - Part 2 (repeat and while… Repetitive Execution - Part 2 (repeat and while Loops)	Repetitive Execution - Part 2 (repeat and while Loops) In this video we introduce the repeat and while loops. There are small differences in the syntax of the three types of loops in R, which may make one form more convenient than another in any given… telecommunications equipment while loop rexp() repeat loop microprocessor colmeans() computer components programming computers central prosessing unit computing & information technology shapiro.test() technology (general) telecommunication electronical devices semiconductors and active components fabrication cat() software technology hardware companies intel intel celeron From Daniel Hall 146 plays 0 Copyright I created all of this content
Repetitive Execution - Part 1 (for Loops) duration 8 minutes 11 seconds Repetitive Execution - Part 1 (for Loops) Repetitive Execution - Part 1 (for Loops)	Repetitive Execution - Part 1 (for Loops) Loops are a basic element of all computer programming. In R, loops are somewhat less necessary than in many other languages because R can do vectorized calculations---calculations on all of the… the long tail demand curve automobiles cat() programming languages rexp() road transport land vehicles household appliances and consumer electronics colmeans() pickup trucks and delivery vehicles motor technology syllabus consumer technology hist() horsepower (power unit of motors) exponents and roots for loop electronics & manufacture of computer consumer electronic and optical products graph (mathematics) From Daniel Hall 86 plays 0 Copyright I created all of this content
Conditional Execution - Part 2 (The if… duration 6 minutes 5 seconds Conditional Execution - Part 2 (The if… Conditional Execution - Part 2 (The if Statement).mp4	Conditional Execution - Part 2 (The if Statement).mp4 Conditional execution is a fundamental technique in all computer programming and most computing languages have an if statement. The if and if else statements in R are similar to those in other… programming software singing and singers computing & information technology technology (general) music From Daniel Hall 68 plays 0 Copyright I created all of this content
Conditional Execution - Part 1 (The ifelse()… duration 4 minutes 30 seconds Conditional Execution - Part 1 (The ifelse()… Conditional Execution - Part 1 (The ifelse() Function).mp4	Conditional Execution - Part 1 (The ifelse() Function).mp4 The ifelse() function evaluates a logical object (usually a vector-valued logical condition) and returns an object of the same dimension with TRUE values replaced by a value, or vector of values,… domestic animals and pets mediterranean cuisine computer languages excel programming languages microsoft office italian cuisine data structures domestic cat (felis) pet animals actors in theatre film and tv pizza (recipe) performing arts cats (felidae) software From Daniel Hall 172 plays 0 Copyright I created all of this content
Grouped Expressions.mp4 duration 8 minutes 15 seconds Grouped Expressions.mp4 Grouped Expressions.mp4	Grouped Expressions.mp4 A grouped expression is a collection of R commands or expressions enclosed in curly brackets {}. R regards a grouped expression as a single expression with a single value, although when such an… programming grammatical correctness international relations diplomacy (politics) cycling grammars international politics legislation linguistics language cycling competitions and events tour of france (tour de france) retail business From Daniel Hall 107 plays 0 Copyright I created all of this content
Repeatedly Applying Functions to Data - Part 2… duration 5 minutes 48 seconds Repeatedly Applying Functions to Data - Part 2… Repeatedly Applying Functions to Data - Part 2 (lapply() and sapply())	Repeatedly Applying Functions to Data - Part 2 (lapply() and sapply()) While tapply() applies a function to different observations in a vector, which might correspond to rows in a data frame, lapply() and sapply() apply a function to each element of a list. In the case… motor highways user interface land vehicles software overtaking (road traffic) berries column (building) tv competitions (game shows) consumer issues traffic and transport automobiles programming factories & manufacture (general) chevrolet lists sapply() figure it out road transport lapply() From Daniel Hall 199 plays 0 Copyright I created all of this content
Data Structures in R - Part 4, Lists.mp4 duration 8 minutes 4 seconds Data Structures in R - Part 4, Lists.mp4 Data Structures in R - Part 4, Lists.mp4	Data Structures in R - Part 4, Lists.mp4 We continue to discuss data structures in R, this time focusing on lists. Unlike vectors, matrices and arrays, the elements of a list may be of different modes. This makes them very flexible and… pet animals names() south carolina state data structures actors in theatre film and tv domestic animals and pets quiz list() land vehicles animal summary() conferences programming automobiles lm() factories & manufacture (general) aggressions football (american) emotional disturbances From Daniel Hall 90 plays 0 Copyright I created all of this content
Data Structures in R - Part 3, Arrays.mp4 duration 4 minutes 44 seconds Data Structures in R - Part 3, Arrays.mp4 Data Structures in R - Part 3, Arrays.mp4	Data Structures in R - Part 3, Arrays.mp4 We continue to discuss data structures in R, this time focusing on arrays. An array is a generalization of a matrix with an arbitrary number of dimensions. We illustrate the structure with a three… rubik's cube mathematics programming manufacture of games and toys western asia middle east mob (video gaming) logic games puzzle games iraq non-player character (npc) gaming array() measurement (mathematics) arab countries game character dim() From Daniel Hall 150 plays 0 Copyright I created all of this content
Introduction to R - Part 2 (Scripts and RStudio) duration 9 minutes 55 seconds Introduction to R - Part 2 (Scripts and RStudio) Introduction to R - Part 2 (Scripts and RStudio)	Introduction to R - Part 2 (Scripts and RStudio) RStudio provides a more convenient programming environment for working with R. We introduce the RStudio and show how to work from a script within RStudio. The script that we focus on is… moral issues programming working workspace software coarseness diplomacy (politics) operating systems moral values human misbehavior microsoft windows international politics international relations ethics nausea From Daniel Hall 708 plays 0 Copyright I created all of this content
Introduction to R - Part 1 (CRAN and Using the R… duration 7 minutes 59 seconds Introduction to R - Part 1 (CRAN and Using the R… Introduction to R - Part 1 (CRAN and Using the R Console)	Introduction to R - Part 1 (CRAN and Using the R Console) In this video we introduce R. We give a brief overview of what R is; introduce CRAN (the Comprehensive R Archive Network website) and show how to find installation files, packages and documentation;… computing & information technology statistics programming graphical user interface calculator software mathematics prenuptial agreement arithmetic operations open-source movement software programming languages multiplication fortran (programming language) data analysis mathematical sciences From Daniel Hall 574 plays 0 Copyright I created all of this content
The ODS System - Part 3 (The ODS Output Statement) duration 6 minutes 30 seconds The ODS System - Part 3 (The ODS Output Statement) The ODS System - Part 3 (The ODS Output Statement)	The ODS System - Part 3 (The ODS Output Statement) In this video we demonstrate the ODS OUTPUT statement with an example involving PROC FREQ and compare it to the OUT= option on the TABLES statement. PROC FREQ, PROC MEANS and several other SAS PROCs… economic downswing legislation economic cuts software statistics staff management mathematical sciences automobiles programming unemployment mathematics job layoffs and furloughs ratio (mathematics) computing & information technology job layoffs From Daniel Hall 431 plays 0 Copyright I created all of this content
PROC TRANSPOSE - Part 2 (Transposing Variables… duration 7 minutes 56 seconds PROC TRANSPOSE - Part 2 (Transposing Variables… PROC TRANSPOSE - Part 2 (Transposing Variables into Observations)	PROC TRANSPOSE - Part 2 (Transposing Variables into Observations) In this video we show how to transpose variables (columns) into observations (rows) with PROC TRANSPOSE. We illustrate by converting a longitudinal data set from wide format to tall format. This can… computing & information technology mathematics software programming patients mathematical sciences health care measurement (mathematics) From Daniel Hall 446 plays 0 Copyright I created all of this content
The Output Statement - Part 4 (FEV Example,… duration 6 minutes 32 seconds The Output Statement - Part 4 (FEV Example,… The Output Statement - Part 4 (FEV Example, Revisited)	The Output Statement - Part 4 (FEV Example, Revisited) In this video we return to the FEV Example and show how the OUTPUT statement, in conjunction with a Sum statement, can be used to compute and store posttest-pretest differences even when the posttest… fire department pulmonary function rescue workers foreign affairs defence and public order and safety activities pulmonary function testing search & rescue medical tests and examinations firefighting fire prevention and rescue firefighter emergency services programming spirometry software From Daniel Hall 186 plays 0 Copyright I created all of this content
Introduction to the OUTPUT Statement duration 7 minutes 13 seconds Introduction to the OUTPUT Statement Introduction to the OUTPUT Statement	Introduction to the OUTPUT Statement Several SAS PROCs have an OUTPUT statement. But here we discuss the OUTPUT statement in a data step. It is used to write the current observation (the contents of the Program Data Vector) to a data… programming software computing & information technology technology (general) From Daniel Hall 231 plays 0 Copyright I created all of this content
The SET Statement - Part 3, the FIRST. and LAST.… duration 6 minutes 43 seconds The SET Statement - Part 3, the FIRST. and LAST.… The SET Statement - Part 3, the FIRST. and LAST. Variables	The SET Statement - Part 3, the FIRST. and LAST. Variables When setting a data set, the BY statement can be used to generate special variables known as the FIRST. and LAST. variables. These variables, which are only available in the program data vector, mark… library (computing) studying schools programming children funeral & burial education teachers education and upbringing teaching facilities examinations educational assessment and evaluation students From Daniel Hall 158 plays 0 Copyright I created all of this content