3020 Measurements in Psychology

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4 Terms

1
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Standardising scores into a z score is a ___ transformation

linear

2
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Transforming z scores into a percentile rank is a ___ transformation

non-linear

3
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If someone scores between ±/- 1 SD of the mean on a test, what percentage and fraction of the population are they the same as?

68% or middle two-thirds

4
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If someone scores between ±/- 2 SD of the mean on a test, what percentage and fraction of the population are they the same as?

95%