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

The video tutorial explains the concept of fair spinners and how to calculate probabilities using a possibility space diagram. It covers the steps to determine the probability of achieving specific scores when spinning two spinners, one with four sides and another with five sides. The tutorial includes examples of calculating the probability of getting a score of three and a score of five or more, emphasizing the importance of understanding the total number of possible outcomes.

What is the purpose of using a 4-sided and a 5-sided spinner in this exercise?

• To confuse the students

• To ensure a higher range of scores

• To make the exercise more complex

• To demonstrate the concept of fair spinners

How is the total score calculated from the spinners?

• By dividing the larger number by the smaller

• By multiplying the numbers on the spinners

• By subtracting the smaller number from the larger

• By adding the numbers on the spinners

What pattern is observed in the possibility space table?

• The scores alternate between even and odd

• The scores increase by 1 each time

• The scores decrease by 1 each time

• The scores are random

What is the probability of Jeff getting a score of three?

• 2 out of 20

• 4 out of 20

• 3 out of 20

• 1 out of 10

How many possible scores are there for a score of five or more?

• 10

• 12

• 14

• 16