Displaying 3 results from an estimated 3 matches for "b3x3".
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3x3
2011 Jan 20
1
Constrained Regression
Hi everyone,
I'm trying to perform a linear regression y = b1x1 + b2x2 + b3x3 + b4x4 +
b5x5 while constraining the coefficients such that -3 <= bi <= 3, and the
sum of bi =1. I've searched R-help and have found solutions for
constrained regression using quadratic programming (solve.QP) where the
coefficients are between 0 and 1 and sum to 1, but unfortunately...
2011 Jan 09
1
question about the chow test of poolability
Good day R-listers,
My question is more a statistical question than an R related question,
so please bear with me
i'm currently applying the chow test of poolability
in fact i'm working with panel N=17 T=5 , and my model looks like
this : Yit= a0+B1X1+B2X2+B3X3+B4X4+eit
My question is the following when i'm Testing for the equality of
the coefficients of the unpooled data (the last stage) many of my
constraints get dropped, this indeed impact the degree of freedom of
my F statistic , and would like to understand the reason?
is this because the tim...
2010 Mar 15
0
testing hipotheses using GAMLSS package
Hi all.
In a GLM in which g(mu) = b0 + b1X1 + b2X2 + b3X3 + b4X4 + b5X5 + b6X6 + b7X7, if I want to test if b1 + b5 = b2 + b6, I can use the contrast package or multicomp package. How can I do a similar test if I am fitting a GAMLSS using the gamlss package? Thank you for your help. Gustavo