Inferential Testing (A Level Only) (AQA A-Level Psychology): Quizzes

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Levels of Measurement
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What does the mnemonic NOIR stand for in relation to levels of measurement?

Nominal, Ordinal, Interval/Ratio

Which level of measurement provides the most informative and precise data?

Interval/ratio data

What is the main feature of nominal data?

Counting frequency in categories

Which statement is true about ordinal data?

Gaps between ranks may vary considerably

What is a key characteristic of interval/ratio data?

Equal intervals between measurement points

Counting rainy days (4) vs sunny days (3) is an example of which type of data?

Nominal data

Recording race finishing positions (1st, 2nd, 3rd) is an example of which data type?

Ordinal data

Measuring reaction times as 245ms, 267ms, and 198ms is an example of which data type?

Interval/ratio data

How does measurement level affect statistical analysis?

It determines which statistical tests can be used

What distinguishes ratio data from interval data?

Ratio data has an absolute zero point

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