Sources of Errors
Interactive practice questions
Tina wants to know which new smart phone she should buy and decides to base her decision on other people’s opinions. She decides to interview some people at the Retirement Home where her grandparents live one Sunday afternoon.
Is this an example of Sampling Error or Measurement Error?
Sampling error
Measurement error
What type of Sampling Error is this?
The sample is too small
The sample is not random
The sample does not adequately represent the population.
An online store sent a survey to all people who had bought the recent book in the Harry Potter series and asked them “Which do you prefer, the Harry Potter Books or the Harry Potter Films?”
In order to determine the most common non-English language spoken in Melbourne, adults and children at a football game were asked: “Other than English, what language do you speak at home?”
Parents with young children enrolled at Pebbles Daycare centres around Australia were surveyed and asked the following question:
“Which is better? Private Schools or Public Schools?”