(2.1). Where Yi is a score on the dependent variable for the i th person, a + b X i describes a line or linear function relating X to Y, and e i is an error. Note that there is a separate score for each X, Y, and error (these are variables), but only one value of a and b, which are population parameters.
Geritol is the brand name of complex multivitamin supplements that contain added iron. Geritol is manufactured by GlaxoSmithKline and comes in either a pill form or a liquid tonic. Many women swear by Gertiol, and in fact, there used to be a grass roots slogan for Geritol: âThere's a baby in every bottle!â.
Traditional gesso [edit].  Gesso , also known glue gesso or Italian gesso is a traditional mix of an animal glue binder (usually rabbit-skin glue), chalk, and white pigment, used to coat rigid surfaces such as wooden painting panels as an absorbent primer coat substrate for painting.or priming flexible canvas, an emulsion of gesso and linseed oil, also called half-chalk ground, is used. In geology, the Italian gesso corresponds to the English gypsum, as it is a calcium sulfate mineral (CaSO 4 Â·2H 2 O).