Inferential Testing (A Level Only) (AQA A-Level Psychology): Flashcards
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Practise the cards
10 cards from this deck
Levels of measurement definition
Levels of measurement definition
Forms by which data can be collected & organised
NOIR mnemonic stands for
NOIR mnemonic stands for
Nominal, Ordinal, Interval/Ratio
Nominal data definition
Nominal data definition
Counting frequency of occurrence in categories
Can nominal categories be ranked?
Can nominal categories be ranked?
No - categories cannot be meaningfully ranked or ordered
Ordinal data definition
Ordinal data definition
Ranking information in order using rating scales
Key limitation of ordinal data
Key limitation of ordinal data
Gaps between different ranks may vary considerably
Interval/ratio data definition
Interval/ratio data definition
Standardised units, most informative & precise measurement
Key feature of interval/ratio data
Key feature of interval/ratio data
Equal intervals between all measurement points
Ratio vs interval data difference
Ratio vs interval data difference
Ratio has absolute zero, interval has arbitrary zero
Why measurement level matters
Why measurement level matters
Determines which statistical tests are appropriate to use