Collecting Data (Junior Cert Mathematics): Flashcards
📚Flashcards
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14 cards from this deck
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Practise the cards
14 cards from this deck
Why pick people randomly when collecting data?
Why pick people randomly when collecting data?
To avoid unfair results (bias)
Why should sample represent population?
Why should sample represent population?
To ensure data reflects everyone being studied
Why need enough people in sample?
Why need enough people in sample?
To make data reliable
Phone interview advantage
Phone interview advantage
Can explain questions & reach people without internet
Phone interview disadvantage
Phone interview disadvantage
Expensive (phone costs & time)
Online questionnaire cost & speed
Online questionnaire cost & speed
Cheap and fast
Online questionnaire anonymity benefit
Online questionnaire anonymity benefit
People might be more honest
Online questionnaire limitation
Online questionnaire limitation
Only people with internet access can participate
Face-to-face interview advantage
Face-to-face interview advantage
Can get detailed answers
Face-to-face interview disadvantage
Face-to-face interview disadvantage
Answers might not be honest (people feel pressured)
Postal questionnaire advantage
Postal questionnaire advantage
Cheap & can reach people without internet
Postal questionnaire disadvantage
Postal questionnaire disadvantage
Low reply rate makes data less reliable
Observation method best for studying
Observation method best for studying
Behaviors as they happen
Observation method limitation
Observation method limitation
Can't find out why behaviors happen