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BSTA QUIZ 8
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Terms in this set (10)
T/F
For proc logistic, the model statement option 'Stb' displays the standardized estimates for the parameters for the continuous explanatory variables in the "Analysis of Maximum Likelihood Estimates" table.
True
T/F
The difference between the logits two probabilities, logit (p1)- logit(p2) is the logarithm of the ratio of the two odds
True
T/F
To find the 95% CI of OR we find the ASE of OR first
False
T/F
Simple logistic regression analysis has been conducted. And estimated regression coefficient of 1 suggests that the dependent variable and the independent variable is not associated
False
Assume that Age is a continuous predictor of a simple logistic regression model. The odds ratio for an increase in Age of 1 year is e^0.04879. Then the odds ratio for an increase in age of 10 years
10e^0.04879
e^1.04879
e^0.48790
(e^0.08479)/10
e^0.48790
Assume that Age is a continuous predictor of a simple logistic regression model and asymptotic standard error of the estimated regression coefficient ASE(b)=0.10. The ASE(5b) is:
0.10
0.02
e^0.10
0.50
0.50
T/F
A sensitivity of 100% means that all sick subjects are recognized as being ill and all healthy subjects are recognized as being healthy
False
T/F
Suppose goodness-of-fit test was done. If p-value<0.05, we reject null hypothesis and conclude that model doesn't fir the data
True
T/F
False Negative rate = 1-sensitivity
True
T/F
If specificity is 100%, then we can say that false positive rate is 0
True
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The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2 years ago, and each is now earning $50,000 per year. Rachel works in the retail industry, where the mean salary for executives with less than 5 years’ experience is$35,000 with a standard deviation of $8,000. Rob is an engineer. The mean salary for engineers with less than 5 years’ experience is$60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel and comment on your findings.