1.2.11 Regression, correlation, multiple regression, index numbers and time series

Simple linear regression Correlation Testing the model Regression analysis Multiple regression Examination of regression assumptions Index numbers and time series Testing models

(2002) used temperature normalization, multiple linear regression, and digital filtration to analyze the temporal trends of an atmospheric dataset on organochlorine pesticides collected at the Canadian high Arctic site of Alert, Nunavut.

Under a project concerning characterization of types of proton events and arrival parameters relating to interplanetary coronal mass ejections (ICMEs) associated with high-intensity solar radio events for the period 1987-2003, IGA researchers studied possible scenarios of particle acceleration for proton events with a high-intensity and low-intensity metric component using solar metric radio emission data on the basis of stepwise multiple regression analysis with analysis of variance.

The Board has: Provided clarifications on: Use of the “Tool for the demonstration and assessment of additionality”; Information to be considered by a project activity requesting retroactive credits, such as for assessing additionality and setting the baseline scenario; Procedures and documentation to be used for the renewal of a crediting period; The definition of biomass and the consideration of changes in carbon pools in project activities other than A/R project activities; Project activities that may temporarily result in “negative emission reductions”; Multiple regression analysis to estimate baseline emissions or project emissions.

With the use of multiple linear regression methods and on the basis of some 850 optical observations of comet C/1983 H1 (IRAS-Araki-Alcock), comet 55P (1995) Honda-Mrkos-Pajdusakova and comet 55P (1998) Tempel-Tuttle, as recorded in the International Comet Quarterly, the expressions characterizing the comets' heliocentric light curves and optimal adjustments at different phases of their trajectories were determined at IGA and it was established that the Delta effect could be seen during periods when the comets were at a distance of less than 0.3 astronomical unit from the Earth, thus making it possible to improve brightness predictions during those trajectory phases.