
What is random sampling?
Important Questions on Collecting Data

Natasha wants to find out what customers of a restaurant think of the food. She decides to interview people face-to-face.
Which method of choosing a sample should Natasha use? Give a reason for your choice.

A hospital has doctors and nurses. Orla plans to interview a sample of staff to find out how much they enjoy their work.
She decides to choose a sample of staff using one of these methods.
Which method is best? Give reasons for your answer.


One thousand people watch a concert. It would take a long time to interview all the people in the audience.

Out of the given which method is best for the situation given below,
A hospital has doctors and nurses. Orla plans to interview a sample of staff to find out how much they enjoy their work.
She decides to choose a sample of staff using one of these methods.
Explain the answer with a reason.

