IB Computer Science Topic B.1.2 Variables in Modelling Revision Notes (SL/HL)

IB Computer Science Topic B.1.2 Variables in Modelling Revision Notes (SL/HL) | RevisionDojo

Key Concepts

Variables are the building blocks of a model.
They represent the different elements or factors that influence the system being modeled.
Identifying the right variables is crucial for creating an accurate and useful model.

Note

Variables allow us to simplify complex systems by focusing on the most important factors.

Types of Variables

Variables can be classified into different types based on their role in the model:

Independent Variables: These are the variables that drive the system. They are usually controlled or manipulated in the model.
Dependent Variables: These variables depend on the independent variables. They represent the outcomes or results of the system.
Constant Variables: These variables remain unchanged throughout the modeling process. They provide a stable reference point.

Example

In a traffic flow model, the independent variable could be the number of cars, while the dependent variable could be the average speed of the cars. The road length might be a constant variable.

How to Identify Variables

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Key Concepts

Variables are the building blocks of a model.
They represent the different elements or factors that influence the system being modeled.
Identifying the right variables is crucial for creating an accurate and useful model.

Note

Variables allow us to simplify complex systems by focusing on the most important factors.

Types of Variables

Variables can be classified into different types based on their role in the model:

Independent Variables: These are the variables that drive the system. They are usually controlled or manipulated in the model.
Dependent Variables: These variables depend on the independent variables. They represent the outcomes or results of the system.
Constant Variables: These variables remain unchanged throughout the modeling process. They provide a stable reference point.

Example

How to Identify Variables

Definition

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(on a website) an arrangement whereby access is restricted to users who have paid to subscribe to the site.

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Duis aute irure dolor in reprehenderit

Note

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam quis nostrud exercitation.

Excepteur sint occaecat cupidatat non proident

Tip

Lorem ipsum dolor sit amet, consectetur adipiscing elit.
Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.
Duis aute irure dolor in reprehenderit in voluptate velit esse cillum.

1. System fundamentals2 subtopics

2. Computer organization1 subtopic

3. Networks1 subtopic

4. Computational thinking, problem-solving and programming3 subtopics

5. Abstract data structures (HL)1 subtopic

6. Resource management (HL)1 subtopic

7. Control (HL)1 subtopic

A. Databases4 subtopics

B. Modelling and simulation4 subtopics

C. Web science6 subtopics

D. Object-oriented programming (OOP)4 subtopics

IB Computer Science B.1.2 Variables in Modelling Notes

1. System fundamentals2 subtopics

2. Computer organization1 subtopic

3. Networks1 subtopic

4. Computational thinking, problem-solving and programming3 subtopics

5. Abstract data structures (HL)1 subtopic

6. Resource management (HL)1 subtopic

7. Control (HL)1 subtopic

A. Databases4 subtopics

B. Modelling and simulation4 subtopics

C. Web science6 subtopics

D. Object-oriented programming (OOP)4 subtopics

Key Concepts

Types of Variables

How to Identify Variables

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Key Concepts

Types of Variables

How to Identify Variables

anim nostrud sit dolore minim proident quis fugiat velit et eiusmod nulla quis nulla mollit dolor sunt culpa aliqua

Duis aute irure dolor in reprehenderit

Excepteur sint occaecat cupidatat non proident

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