step 3 statics Flashcards

1
Q
A
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2
Q

TP rate/ FP rate/ FN rate/ TN rate

A

TP rate: sensitivity 질병있는사람이 양성 나올확율
TN rate: specificity 질병없는 사람이 음성나올확율
글자완전 꺼꾸로
FN rate : 1-sens
FP rate: 1- spec

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3
Q

roc curve x/ y축?

A

진양성 vs 위양성
ROC curve demonstrates how well a diagnostic
test can distinguish between 2 groups (eg,
disease vs healthy). Plots the true-positive rate
(sensitivity) against the false-positive rate
(1 – specificity).
The better performing test will have a higher
area under the curve (AUC), with the curve
closer to the upper left corner

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4
Q

standard error 는 어떤 …. 뭘 알고저 하는 개념이냐?

A

우리가 sampling을 통해 얻은 값들이 가지는 분포가 **얼마나 믿을수있는지 알고 싶으니까 **이 sampling 의 분포의 표준 편차를 구해보자. 그게 표준 오차인 Standard error 이다.

표준 편차는 그럼 뭔가? 이건 평균으로 부터 얼마나 얼마나 떨어져 있는가를 나타내늗 단위 : 170센티가 키 평균이규 표준편차가 5센티이면 +2표준편차는 180센티인거지.

https://www.youtube.com/watch?v=XrL2SbwAfhE

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5
Q

의료 과실 event?

A

Negligent adverse event:

Preventable event caused by clear deviation from standard of care

Example: drug administered to patient with known allergy

negligent = 부주의 과실

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6
Q

rr rrr ar arr

A
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