Regression to the mean, Advanced Statistics

Regression to the mean is the procedure first noted by Sir Francis Galton that 'each peculiarity in man is shared by his kinsmen, but on average to the less degree.' Hence the tendency, for instance, for tall parents to produce tall offspring but then who, on average, is shorter than their own parents. The term is now usually used to label the phenomenon that a variable which is extreme on its first measurement will tend to be closer to the centre of the distribution for the later measurement. For instance, in a screening programme for hypertension, only the persons with high blood pressure are asked to return for the second measure. On an average, the second measure taken will be less than the first measure.

Posted Date: 8/1/2012 12:38:41 AM | Location : United States







Related Discussions:- Regression to the mean, Assignment Help, Ask Question on Regression to the mean, Get Answer, Expert's Help, Regression to the mean Discussions

Write discussion on Regression to the mean
Your posts are moderated
Related Questions
Ordination is the procedure of reducing the dimensionality (that is the number of variables) of multivariate data by deriving the small number of new variables which contain much

High-dimensional data : This term used for data sets which are characterized by the very large number of variables and a much more modest number of the observations. In the 21 st

Quantalassay:  The experiment in which the groups of subjects are exposed to the different doses of, generally, a drug, to which the particular number respond. Data from such type

Multitrait multi method model (MTMM) is the form of confirmatory factor analysis model in which the different techniques of measurement are used to measure each of the latent vari

Laplace distribution : The probability distribution, f(x), given by the following formula   Can be derived as the distribution of the difference of two independent random var

Group visible design is an arrangement of the v mn treatments in b blocks such that: * Each block comprises k distinct treatments k5v; * Each treatment is replicated r number

Probability judgements : Human beings often require assessing the probability which some event will occur and accuracy of these probability judgements often determines success of o

Response surface methodology (RSM): The collection of the statistical and mathematical methods useful for improving, developing, and optimizing processes with significant applicat

Residual plots are the plots of some type of residual which might be helpful in assessing the assumption made by the fitted model. In regression analysis there are various method

O'Brien's two-sample tests are the extensions of the conventional tests for assessing the differences between treatment groups which take account of the possible heterogeneous nat