Exam 2: Biostatistics Flashcards
What are examples of point estimates?
Prevalence Incidence RR OR Sensitivity Specificity
What is a confidence interval?
A range of values that the point estimate could reasonably take
What is the 95% confidence interval?
If we repeated sampling of the population many times, and for each sample constructed a 95% confidence interval, then 95% of these intervals would contain the true population parameter
What is the p value?
The probability of obtaining the observed value when the null hypothesis (Ho) is true
What is Ho?
Typically states there is no difference between the groups being compared
What does it mean if the p value is small?
The probability of getting the observed value is small, assuming Ho is true
What is the Ho for OR (and RR)?
The OR (or RR) obtained is not different from 1.0
What is the Ho for a difference between 2 mean values?
The average of 1 is not different from the average of the other
Look at examples
Look at examples
