Reading a studyIs the sample fair?
Could this sample have been anybody? Circle your answer.
A computer picks 200 customer numbers at random from the full list.
Yes — it is randomNo — a group is left outNo — only volunteers reply
A website asks visitors to click if they like the new design.
Yes — it is randomNo — a group is left outNo — only volunteers reply
To find how students travel, only those in the car park are asked.
Yes — it is randomNo — a group is left outNo — only volunteers reply
Every 20th name on the complete membership list is chosen.
Yes — it is randomNo — a group is left outNo — only volunteers reply
Listeners are invited to phone in and say whether they agree.
Yes — it is randomNo — a group is left outNo — only volunteers reply
Reading habits are surveyed by asking people inside the library.
Yes — it is randomNo — a group is left outNo — only volunteers reply