STEM Excellence Series: Empowering the Next Generation

RANDOM

Random

Definition Of Random

Random is a chance of picking.

More About Random

Random doesn't have any particular pattern or order.
Random is not predictable.
Every action has an equal chance of picking.

Examples of Random

 
When this dice is rolled, the chance of getting random result is between the numbers 1 to 6.
The values in a set are {7, 6.87, 7.23, 6.9, 7.1, 7.0}. All these values are the random values but are close to 7.

Video Examples: Introduction to Random Variables

Solved Example on Random

Ques: A bag has red, blue, and green balls. Which ones can be randomly picked?

Choices:

A. red, blue, or green
B. only red and blue
C. only red
D. only green

Correct Answer: A

Solution:

Step 1: Random is a chance of picking.
Step 2: A bag has red, blue, and green balls. So, the chance of picking a ball from the bag can be red, blue, or green colors.
Step 3: So, the random result is for all the three colors, red, blue, or green

Quick Summary

  • Random events have no predictable pattern.
  • Each outcome of a random event has a chance of occurring.
  • Random values are often used in simulations and modeling.
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🍎 Teacher Insights

Use physical examples like dice rolls, coin flips, and drawing from a bag to illustrate randomness. Emphasize that past outcomes do not influence future random events.

🎓 Prerequisites

  • Basic arithmetic
  • Understanding of chance

Check Your Knowledge

Q1: Which of the following is an example of a random event?

Q2: What does it mean for a coin flip to be random?

Frequently Asked Questions

Q: What does it mean for something to be 'random'?
A: It means the outcome is not predetermined and each possibility has a chance of happening.

Q: Can randomness be controlled?
A: While you can influence the possible outcomes, the specific result of a random process is inherently unpredictable.

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