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z scores and probability Flashcards

(5 cards)

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1
Q

Probability

A

π‘π‘Ÿπ‘œπ‘π‘Žπ‘π‘–π‘™π‘–π‘‘π‘¦ = π‘π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ π‘“π‘Žπ‘£π‘œπ‘’π‘Ÿπ‘Žπ‘π‘™π‘’ π‘œπ‘’π‘‘π‘π‘œπ‘šπ‘’π‘ / π‘‡π‘œπ‘‘π‘Žπ‘™ π‘›π‘’π‘šπ‘π‘’π‘Ÿ π‘œπ‘“ π‘π‘œπ‘ π‘ π‘–π‘π‘™π‘’ π‘œπ‘’π‘‘π‘π‘œπ‘šπ‘’π‘ 

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2
Q

z-score

A

A z-score expresses the raw score in SD units – it indicates the
number of SDs away from the mean

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3
Q

To calculate z score

A

z-score: (raw score – mean)/SD

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4
Q

Interpretation of a z-score involves two parts

A
  1. The sign of the z-score(+/-)
  2. The numerical value of the z-score
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5
Q

Probability Distribution

A

Shows all the probable outcomes and the probability associated with each outcome

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