Variables

Jul 22, 2012

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Review of Terms. Sample / Individual: The objects described by a set of data, individuals may be people, animals or thingsEx: Students, Patients, MiceVariable: any characteristic of an individual. A variable can take on different values for different individualsEx: Heights of individuals:

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Variables

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1. Variables

VARIABLES

VARIABLES. Definition: Variables are properties or characteristics of people or things that vary in quality or magnitude from person to person or object to object (Miller & Nicholson, 1976) Demographic characteristics Personality traits Communication styles or competencies Constructs

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VARIABLES

VARIABLES. Topic #3. Variables and the Unit of Analysis. Variables are characteristics of the “things” that we are studying. These “things” are commonly called cases or units . A “case study” focuses on a single “thing.”

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Physical Variables Social Variables Personality Variables Context Variables

What are physical variables?. Physical Variables. Physical variables are aspects of the testing situation that need to be controlled: day of the week experimental room lighting. Explain elimination.. Physical Variables. Elimination completely removes extraneous physical variables from the

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Variables

Variables. Six properties: name address value type lifetime scope. Binding times of properties: language specification language implementation compile run Broad classification: static dynamic. Name. Syntax of language specifies valid names. Languages used to limit length of names

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Variables

“To be is to be the value of a variable .” - William Quine. Variables. Announcements. Pset 1 and prog 1 were due yesterday Pset 2 and prog 2 are going out today Tiny (intro) email backlog Probability Review is… TBA still

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Variables

Variables. Variable – named memory location that stores value Names for variables: Must start with a letter May contain letters, numbers, underscore character May mix upper/lower case – VB is not case sensitive but will display names with case as stated in first usage

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Physical Variables Social Variables Personality Variables Context Variables

Physical Variables Social Variables Personality Variables Context Variables. Physical variables are aspects of the testing situation that need to be controlled: day of the week experimental room lighting. What are physical variables?. Physical Variables.

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Variables

Variables. Investigation 1. WD. Lesson Essential Questions. Why is it important to control which variables stay the same and which change? How does a changing variable affect the outcome of the number of swings?. Variables. WD.

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Variables

Variables. Mr. McTavish. One address – one piece of information. Boolean – True/False. How to Declare. bool blBoolean ; – or – Boolean blBoolean2 ; Boolean is the preferred type. How to Initialize. blBoolean = true ; – or – blBoolean2 = false ;. Integer. How to Declare.

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VARIABLES

VARIABLES. and other things related to methodology. Variables . A variable is a trait that differs from one case to another. Traits that do not differ are called constants There are different type of variables Continuous Discrete Independent Dependent. Confounding .

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Variables

Variables. Making variables. Click on the variables tab and click "Make a variable". Set vs. Change. Set and Change look the same but are slightly different in what they do Set [ variableName ] to [number] Sets the variable to whatever the number is Change [ variableName ] by [number]

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Variables

Variables. 9/10/2013. Readings. Chapter 3 Proposing Explanations, Framing Hypotheses, and Making Comparisons (Pollock) (pp.48-58) Chapter 1 Introduction to SPSS (Pollock Workbook) . Homework: Due 9/12. Chapter 1 Question 1 Parts A &B Question 2

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VARIABLES

VARIABLES. Warm-up. Choose a topic below and write a testable question and hypothesis regarding the topic. Mobile phones Exercise Learning Dog behavior Be sure your questions follow the PLUS format Be sure your hypothesis has a “because”. Warm-up.

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Variables

Variables. 9/12/2013. Readings. Chapter 2 Measuring and Describing Variables (Pollock) (pp.32-33 ) Chapter 2 Descriptive Statistics (Pollock Workbook). Exam 1 9/19. Exam 1 9/19 In class exam. You do not need an exam book You can use a basic calculator.

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Variables

Variables. Variables start with a $ sign when used . The variable gets no $ when declared . Declare a variable with the set command set X = "T" set X = $T set X = 1 set X = 1 + $# Or declare a variable (if it is a number) with the @ command (but you need a space after the “@”)

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Variables

Variables. What is the difference between a dependent and an independent variable?. Independent Variable (IV). “I change” What you purposely change in the experiment. Dependent Variable (DV). What changes because you changed the independent variable. Controlled Variable (CV).

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Variables

Variables. Objectives:. By the end of this section you should: Understand what the variables are and why they are used. Use C++ built in data types to create program variables. Apply C++ syntax rules to declare variables, initialize them. Understand memory allocation process.

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Variables

Kingdom of Saudi Arabia Prince s Nora bint Abdul Rahman University College of Computer Since and Information System CS240. Variables. Objectives:. By the end of this section you should: Understand what the variables are and why they are used.

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Variables

Variables. have a type have an address (in memory) have a value have a name (for now). Variables - name. must start with a-z, A-Z ( _ allowed, but not recommended) other characters may be a-z, A-Z, 0-9, _

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