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

The video tutorial explains how to interpret a two-way table showing student visits to various locations. It focuses on stratified sampling by gender and location, specifically calculating the number of female students who visited the Brighton Wheel. The tutorial details the calculation process, emphasizing the need for an integer answer and explaining the marking scheme for the question.

What are the three places the students visited according to the two-way table?

• Aquarium, Brighton wheel, Royal Pavilion

• Zoo, Brighton wheel, Royal Pavilion

• Aquarium, Brighton wheel, Zoo

• Aquarium, Zoo, Royal Pavilion

What is the key concept used to select the sample of students?

• Cluster Sampling

• Random Sampling

• Stratified Sampling

• Systematic Sampling

How many female students visited the Brighton wheel according to the table?

• 35

• 30

• 45

• 40

What is the calculated proportion of female students who visited the Brighton wheel in the sample?

• 10.459

• 11.459

• 8.459

• 9.459

What is the acceptable final answer for the number of female students in the sample who visited the Brighton wheel?

• 9 or 10

• 8 or 9

• 10 or 11

• 11 or 12