Class Snack - Sept 20th Cookie Recipe

1.For repeated data, what does it mean by "weighted analysis"? Why is it necessary for us to put different weights on different obervations based on their oberseved numbers in each subject?

2. When talking about the additional advantage of analysis of covariance, the author claims that it has greated statistical power by comparing the number of patients needed. I wonder how we get these exact numbers.

3. For the public bias, one example of regression towards the mean, the reason why public bias is generated lies in different methods assessing quality of a paper? How can we solve such a common problem?

PeijunSang (talk)05:43, 4 January 2013