- published: 21 May 2011
- views: 275215
An index is an indirect shortcut derived from and pointing into a greater volume of values, data, information or knowledge. Index may refer to:
A differential equation is a mathematical equation that relates some function with its derivatives. In applications, the functions usually represent physical quantities, the derivatives represent their rates of change, and the equation defines a relationship between the two. Because such relations are extremely common, differential equations play a prominent role in many disciplines including engineering, physics, economics, and biology.
In pure mathematics, differential equations are studied from several different perspectives, mostly concerned with their solutions—the set of functions that satisfy the equation. Only the simplest differential equations are solvable by explicit formulas; however, some properties of solutions of a given differential equation may be determined without finding their exact form.
If a self-contained formula for the solution is not available, the solution may be numerically approximated using computers. The theory of dynamical systems puts emphasis on qualitative analysis of systems described by differential equations, while many numerical methods have been developed to determine solutions with a given degree of accuracy.
Download file: https://people.highline.edu/mgirvin/ExcelIsFun.htm 1. See how to do a three way lookup when there are two row header variables (criteria) and one column header (criteria) variable using INDEX and MATCH functions for a normal two way lookup, but with the two row headers joined to create a single row header criteria. In essence, three way lookup is turned into a standard two way lookup. Also see IFERROR function.
Learn how to recode variables and compute and index variable using SPSS.
Learn how to draw patterns such as a maze or vortex with NCLab Turtle, using for loops and modifying the counting or index variables. Set beginning and ending values for the index, write operations on the index within the body of the for loop. TURTLE CODING COURSE: LEARN PROGRAMMING THROUGH ART The Turtle Coding course is an excellent visual introduction to Python programming. Students create beautiful objects including pendants, mosaics, ornaments, cookie cutters, round containers, vases and even chess figures. Their creations can be printed on 3D printers and cut out of wood or plastic on laser cutters. While writing programs for the Turtle, students become proficient in using variables, loops and functions as well as in Python code syntax, formatting and debugging. The course require...
This video describes how to standardize variables (converting variables into z-scores based on a standard normal distribution) and how to create an index score from variables on different scales (3:27). This video includes a brief reminder of how to read the exponential notation sometimes used by R (at 4:30).
A tutorial on sketch structure, functions, return values and variables. Sketch / code used in tutorial: http://mjlorton.com/forum/index.php?topic=119.0 Buy your Arduino kit here: http://astore.amazon.com/m0711-20?_encoding=UTF8&node=8 --------------------- Click "Show more" ------------------------------- My website and forum:- http://www.mjlorton.com Donations and contributions:- http://www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http://www.youtube.com/MJLorton My Techie Amazon Store: http://astore.amazon.com/m0711-20 My other channel VBlogMag - For almost any topic under the sun! - http://www.youtube.com/VBlogMag My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20 ------------------------------------------------------------...
match and index tutorial. These 2 functions are very often used together in place of vlookup. This example looks up IRS witholding for (1) wages, (2) marital status, and (3) number of deductions. 2 and 3 are combined in a single table (M2, S0, S3, etc.)
This video reviews the scales of measurement covered in introductory statistics: nominal, ordinal, interval, and ratio (Part 1 of 2). Scales of Measurement Nominal, Ordinal, Interval, Ratio YouTube Channel: https://www.youtube.com/user/statisticsinstructor Subscribe today! Lifetime access to SPSS videos: http://tinyurl.com/m2532td Video Transcript: In this video we'll take a look at what are known as the scales of measurement. OK first of all measurement can be defined as the process of applying numbers to objects according to a set of rules. So when we measure something we apply numbers or we give numbers to something and this something is just generically an object or objects so we're assigning numbers to some thing or things and when we do that we follow some sort of rules. Now in ...
This algebra 1 & 2 video tutorial shows you how to simplify radicals with variables, fractions, and exponents that contains both square roots, cube roots, and variables such as x, y, and z. This video contains plenty of examples and practice problems. Algebra Online Course: https://www.udemy.com/algebracourse7245/learn/v4/content Algebra Video Playlist: https://www.youtube.com/watch?v=i6sbjtJjJ-A&list=PL0o_zxa4K1BWKL_6lYRmEaXY6OgZWGE8G&index=1&t=13129s Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/ Here is a list of topics: 1. Simplifying Radical Expressions With Variables & Exponents 2. Simplifying Radicals With Fractions & Variables 3. Radicals With Square Roots & Cube Roots 4. Radical Expressions with...
We continue to look at basic tolls of R. in this video we look at indexes and logical variables to isolate different indexes
Introduction to optimal control within a course on "Optimal and Robust Control" (B3M35ORR, BE3M35ORR) given at Faculty of Electrical Engineering, Czech Technical University in Prague. Motivation for optimal control; formulation of optimal control criterion (aka cost function, performance index); identification of optimization variables (either controller parameters or control signals).
Very often students who have questionnaire data ask me whether they can add together some similar variables to create a new variable that summarizes the meaning of all the questions that go into it, for example if you have a load of questions about the service of an airline, the sum of those questions gives a new variable that may be interpreted as airline satisfaction score. The answers is YES (that new variable is called a score/index), but there are things to watch out for. Keywords: index, composite score, attribute, trait, items, unit weighted scores, weighted scores, reliability, MEAN().
(Index: https://www.stat.auckland.ac.nz/~wild/wildaboutstatistics/ ) Plotting numeric variables shows us interesting characteristics of our data. In this video we’ll explore pulse rates and household incomes and learn how to describe what we see. After you’ve watched this video, you should be able to answer these questions How is a stacked dot plot constructed? What are the four types of things we look for in dot plots? What is the common name for the mean? How does the mean relate to the dot plot? What property defines the median? When do the mean and median tend to be very similar, and when can they be quite different? Why might we prefer the median to the mean for personal incomes?
Go to http://www.examsolutions.co.uk to see the full index, playlists and more videos on differential equations, calculus and other maths topics
This lesson teaches how to find the square root of a term that has variables and numbers.
STATISTICS FOR ECONOMICS (CHAPTER - 12 ) INDEX NUMBERS ( Part - 1 ) Introduction 00:00:21- 00:02:17 The Meaning of Index Numbers 00:02:18 - 00:05:38 An Index number is a statistical device for measuring changes in the magnitude of a group of related variables Definitions of Index Numbers given by Economist 00:05:39 -00:06:31 *Edgeworth's Definition *Croxton and Cowden's Definition *Speigal's Definition Various Features of Index Number 00:06:32- 00:10:12 *Index number are specialized Averages *Index numbers are expressed in Percentages *Index numbers measure changes in composite and complex phenomenon *Index numbers measure the effect of changes in relation to time or place Advantages of Index Numbers 00:10:13 *Helpful in Formulation of Policies *Helpful in Measuring Inflation or Defl...
Go to http://www.examsolutions.co.uk to see the full index, playlists and more maths videos on differential equations and other maths topics
match and index tutorial. These 2 functions are very often used together in place of vlookup. This example looks up IRS witholding for (1) wages, (2) marital status, and (3) number of deductions. 2 and 3 are combined in a single table (M2, S0, S3, etc.)
Big crossover topic from Algebra 1 to Algebra 2, on exponents. Here we multiply exponents, divide exponents, and raise them to powers. I hope this video can improve your abilities, exponentially! YAY MATH! Please visit yaymath.org Videos copyright © Yay Math For all videos, free quizzes, worksheets, Yay Math's book on inspired education, and entire courses you can download, please visit yaymath.org
From my expressions series produced way back in 2007! This lesson goes into understanding the use of arrays and variables in expressions, which is critical to writing useful expressions.
This video introduces the programming concepts and syntax for creating new variables. The Stata commands covered include generate, replace, recode, label define, label values, label variable, and label data.
Dr. Steve Garrity's virtual seminar "Canopy 101: Leaf Area Index - Theory, Measurement, Application" discusses the different methods available for measuring LAI. The theory, advantages, and disadvantages of each method will be covered. Leaf Area Index (LAI) is one of the most widely measured variables used to describe plant canopies. The traditional approach to measuring LAI required destructive harvesting and measurement of every leaf within a given area of plant canopy. Fortunately, advances in theory and sensor technology have provided several alternative methods for rapidly and non-destructively estimating LAI. Visit http://www.decagon.com/ for more information on Decagon's products, service, and education.
In this Arduino tutorial we look at Sketch structure, variables and procedures. --------------------- Click "Show more" ------------------------------- My website and forum:- http://www.mjlorton.com Donations and contributions:- http://www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http://www.youtube.com/MJLorton My Techie Amazon Store: http://astore.amazon.com/m0711-20 My other channel VBlogMag - For almost any topic under the sun! - http://www.youtube.com/VBlogMag My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20 ----------------------------------------------------------------------- HobbyTronics - South Africa's electronic components supplier for your electronics hobby needs. Specialist supplier of electronic components ...
John Maguire explains the five variables you can control, and must control, to edit your work and make it more readable. This is based on his College Writing Guide. More at readablewriting.com.
Determining the efficiency of a number of variables in their ability to measure a single construct. Link to Monte Carlo calculator: http://www.allenandunwin.com/spss4/further_resources.html Download the file titled MonteCarloPA.zip.
Basic introduction to correlation - how to interpret correlation coefficient, and how to chose the right type of correlation measure for your situation. 0:00 Introduction to bivariate correlation 2:20 Why does SPSS provide more than one measure for correlation? 3:26 Example 1: Pearson correlation 7:54 Example 2: Spearman (rhp), Kendall's tau-b 15:26 Example 3: correlation matrix I could make this video real quick and just show you Pearson's correlation coefficient, which is commonly taught in a introductory stats course. However, the Pearson's correlation IS NOT always applicable as it depends on whether your data satisfies certain conditions. So to do correlation analysis, it's better I bring together all the types of measures of correlation given in SPSS in one presentation. Watc...
For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=5 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors ---------------------------------------------------------------------------------------- A variable is nothing but a name given to a storage area that our programs can manipulate. Each variable in PL/SQL has a specific data type, which determines the size and layout of the variable's memory; the range of values that can be stored within that memory and the set of operations that can be applied to the variable. The name of a PL/SQL variable consists of a letter optionally followed by more letters, n...
Lecturer: Dr. Erin M. Buchanan Missouri State University Summer 2016 Lecture materials and assignment available at statstools.com. http://statstools.com/learn/advanced-statistics/ This video covers moderated mediation (model 7) using Hayes' Process plug in for SPSS - includes g power, data screening, analysis, and interpretation.
In this lecture, Dr. Lori Peek discusses sociological theories of disaster and vulnerability. She highlights the variables that characterize vulnerability to the impacts of disasters, and notes that much research on vulnerable populations does not focus on the social systems and power relations that exacerbate risk. She then discusses the pressure and release model to characterize the temporal impacts of disasters. She uses the example of a project on the Gulf Coast that looks at the impacts of oil spills on youth health, and she explains the range of methodological approaches used to measure these impacts. Finally, she discusses how she and collaborators have built on vulnerability research to create curricula for high school students to engage in disaster recovery. More information on t...
Principal Component Analysis and Factor Analysis in Stata https://sites.google.com/site/econometricsacademy/econometrics-models/principal-component-analysis
automatically calculate IRS withholding by knowing 3 things (wages, marital status, & number of deductions) Uses 2 VLOOKUP functions nested inside of an IF function. It reads "If Single, then lookup here, otherwise lookup there." This technique is useful in many applications. Also see video "match and index tutorial"
★☆★ ENROLL IN CLEVER PROGRAMMER http://cleverprogrammer.to/enroll Unit 1: PYTHON SYNTAX ====================================== 0:00 -- 1. Welcome! 2:15 -- 2. Variables 2:53 -- 3. Booleans 3:39 -- 4. You've Been Reassigned! 3:53 -- 5. Whitespace 4:42 -- 6. Whitespace Means Right Space 4:53 -- 7. Matter of Interpretation 5:36 -- 8. Single Line Comments 6:55 -- 9. Multi-Line Comments 7:20 -- 10. Math 8:58 -- 11. Exponentiation 9:50 -- 12. Modulo 11:52 -- 13. Bringing it All Together Lesson 2: Tip Calculator 14:55 -- 1. The Meal 16:06 -- 2. The Tax 16:35 -- 3. The Tip 19:19 -- 4. Reassign in a Single Line 20:37 -- 5. The Total ====================================== Unit 2: STRINGS AND CONSOLE OUTPUT ====================================== LESSON 1: Strings & Console Output 22:05 -- 1. ...
In this next section, we'll go over how to read data from the URL. I apologise for the video being a little longer than the others but I had a lot of ground that I wanted to cover.