Collecting Data (Junior Cert Mathematics): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
Why is it important to pick people randomly when collecting data?
Why is it important to pick people randomly when collecting data?
To avoid unfair results (bias)
What should your sample do in relation to the population you are studying?
What should your sample do in relation to the population you are studying?
Represent everyone in the population
Why do you need enough people in your sample?
Why do you need enough people in your sample?
So your data is reliable
What is an advantage of phone interviews?
What is an advantage of phone interviews?
You can help people understand questions
Why are phone interviews more expensive?
Why are phone interviews more expensive?
Phone costs and time spent per person
What is an advantage of online questionnaires?
What is an advantage of online questionnaires?
They are cheap and fast
Why might people be more honest in online questionnaires?
Why might people be more honest in online questionnaires?
Because they are anonymous
What is a disadvantage of online questionnaires?
What is a disadvantage of online questionnaires?
Only people with internet can participate
What is an advantage of face-to-face interviews?
What is an advantage of face-to-face interviews?
You can get detailed answers
Why might face-to-face interviews produce less honest answers?
Why might face-to-face interviews produce less honest answers?
People might feel nervous or pressured
What is a disadvantage of postal questionnaires?
What is a disadvantage of postal questionnaires?
Many people might not reply
What is observation particularly good for studying?
What is observation particularly good for studying?
Behaviors as they happen
What is a disadvantage of observation?
What is a disadvantage of observation?
You only see what happens, not why