GCSE Secondary Maths Age 13-17 - Probability & Statistics: Probability - Explained

The video tutorial explains how to calculate the probability of selecting a blue pen from a box containing 7 blue, 4 green, and 6 red pens. It emphasizes the importance of correctly representing probability as a fraction, percentage, or decimal. The total number of pens is calculated as 17, and the probability of picking a blue pen is determined to be 7 out of 17. The tutorial also highlights the importance of understanding probability fractions and warns against incorrect representations.

How many blue pens are there in the box?

• 4

• 6

• 7

• 17

What is the total number of pens in the box?

• 10

• 15

• 17

• 20

What is the probability of picking a blue pen from the box?

• 7/17

• 4/17

• 1/2

• 6/17

Which of the following is NOT a correct way to express probability?

• As a fraction

• As a decimal

• As a whole number

• As a percentage

How many marks are awarded for correctly finding the total number of pens?

• 0

• 1

• 2

• 3