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Least squares method of fitting a line ( the line of best fit or the regression line) through the scatter diagram is a method which minimizes the sum of squared vertical deviations from the fitted lines. In other words the line to be fitted will pass through the points of the scatter diagram in such a fashion that the sum of the squares of the vertical deviations of these points from the line will be a minimum
If the regression line is drawn as Y = C + 1075x, when X was 2 and y was 239, given that the intercept was 11. Calculate the residual
A manufacturer of VCRs plans to purchase a particular component from suppliers A, B and C. 30% of the components are to be purchased from A, 20% from B and 50% from C. In the past,
Q1.(i) The logistics department of a large firm employs three "estimators" whose job it is to decide the likely cost of delivering their products to their customers. This enables
How to combine two prisms to produce deviation without dispersion ?
conceptof probality, theoretical, distribution, normal,binomial and poisson
Consider a multiple regression model Y=ß0+ß1X1+ß2X2+µ The sample data yields the following matrices: X’X= { ¦(33&0&0@0&40&0@0&20&60) } Y’X=¦((132&24&92)) ?(y-Y)2 =150 a. what
Standard Deviation: The standard deviation is a gauge of the variance, or dispersion, of the market return over its average returns. Thus Standard Deviation gives an insight of tot
Long before Bohr gave his theory of hydrogen atom, various scientists had observed experimentally, the spectral series of hydrogen atom. Bohr offered a theoretical explanation of t
A teacher is interested in comparing the effects of 3 different parts of rehearsal methods (Rote rehearsal, Imagery, and Story) on number of words recalled. Participants are random
advantages of statistical method
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