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Q: Must Variables be created before being used?
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What do you mean by implicit and explicit variables declaration in visual basic?

implicit means you must declare variables before using them while explicit is not a must you declare variables before using them


What are the criteria for nomothetic causality?

1. The variables must be corelated. 2. The cause must come before the effect 3. Variables are nonspurious


How are variables created?

Primitive data type variables can be created like below: int a; float b; Objects must be created using the "new" keyword Ex: ArrayList lst = new ArrayList();


What does one have to do before a regression analysis?

Before undertaking regression analysis, one must decide on which variables will be analysed. Regression analysis is predicting a variable from a number of other variables.


What is Option explicit in vb?

Option explicit means that all variables must be declared before they can be used.


Anova depends on having independent variables describe an abuse that might occur by having dependent variables?

there are three kinds of variables.a variable must be a situation,condition or a factor1.change or manipulated variables.-are the variables that are being tested or changed.2.constant variables.-are the variables that you are not intended to test or study,or the variables to be kept constant.3.responding variables.-are the results of the maipulated variables.


What is the default initial value for all numeric types?

If they are instance variables the default initial value is 0. If they are method local variables, they are null and must be initialized to some value before they are used


What is optional for python programming?

One optional part of python programming is the declaration of variables before use. In many languages, you must declare your variables before using them, but in python, you can simply set a variable equal to something and it will handle the type without your help.


In an experiment what are controlled variables?

Controlled variables are quantities that must remain constant.


Can you give me a sentence for variables?

Weather-modeling software must account for many variables.


Are negative numbers discrete random variables?

Discrete variables must be countable and not negative. So no a negative number must be a continuous variable.


What is required before an e581 is created?

must be pre-approved