Thursday, August 28, 2008
Tuesday, August 26, 2008
HPA Model
1. http://www.cellml.org/models/gonzalezheydrich_steingard_kohane_1994_version02
2. http://www.cellml.org/models/gonzalezheydrich_steingard_kohane_1994_version02
2. http://www.cellml.org/models/gonzalezheydrich_steingard_kohane_1994_version02
Monday, August 25, 2008
Equal variance
1. http://en.wikipedia.org/wiki/Homoscedasticity
2. http://en.wikipedia.org/wiki/Bartlett%27s_test
2. http://en.wikipedia.org/wiki/Bartlett%27s_test
Thursday, August 21, 2008
A good book
Principles of biostatistics / Marcello Pagano, Kimberlee Gauvreau.
Wednesday, August 20, 2008
Three possible curve fitting approach
1. curve fitting for individual woman and calculate the median trajectory, then curve fitting this median trajectory to confirm an equation
2. curve fitting for all existing data to choose an equation
3. curve fitting for individual woman (probably different woman has different equation), rank these equations in a “probability distributions” to find an equation with largest proportions of ranking.
2. curve fitting for all existing data to choose an equation
3. curve fitting for individual woman (probably different woman has different equation), rank these equations in a “probability distributions” to find an equation with largest proportions of ranking.
We need to discuss some possible scenarios:
1. data is not well fitted
Discussion:
1. Curve fitting to find the best equation needs trade on “simplicity” and “goodness of fit”.
2. Needs to match the general trend of blood hormone
3. Needs to define some criteria, which we can’t predict this woman.
Monday, August 18, 2008
correlation coefficient in Matlab
1. corrcoef() to calculate the “correlation coefficient” in matlab
Thursday, August 14, 2008
homoscedasticity
1. homoscedasticity
–characterized by variances which do not differ greatly between distributions
2. http://www.le.ac.uk/bl/gat/virtualfc/Stats/variance.html
Tuesday, August 5, 2008
Homoscedasicity
http://www.le.ac.uk/bl/gat/virtualfc/Stats/variance.html