biostatistics Flashcards
1
Q
if 400 people eat at a bbq and 300 people eat potato salad 40 people got sick and 30 of them ate potatoe salad
what is the attack rate?
A
total affected / total at risk for becoming affected
attack rate = 30/300
2
Q
what is represented by the area under the curve of a ROC curve
ROC curve = graph of sensitivity (true positve rate) against 1-specificity (false positive rate)
A
accuracy
number of true positives devided by the number of all observations
