About shahd

shahd · ‎11-27-2018

from sas output I got two tables for collionarity diagnostics. Collinearity Diagnostics and Collinearity Diagnostics with intercept adjusted. Which table should I interpret for eigen values eigen vectors and condition index could anyone help with that Thanks

shahd · ‎11-27-2018

I have a model with y variable and x1, x2 variables, after my investigations i found that x1 is not linear while x2 is linear and the best transformation of x2 is the exp(x2). Can I perform another type of regression model which can give me better predictions in this case. Thanks

shahd · ‎11-27-2018

thannnnnnks alot

shahd · ‎11-27-2018

I need to check the variance for my model so I can decide if i need to make transformation for y variable to make the variance constant if its not constant.

shahd · ‎11-27-2018

Hi all, I have a residual plot which is shown below and I am not sure if the variance is constant or not because I can see a funnel shape. Could you please suggest me a sas code for a test to make sure that the variance constant or not constant

shahd · ‎11-24-2018

I need to decide if this relationship between x and y is linear or non-linear so if its non-linear I need to transform the x

shahd · ‎11-24-2018

for my understanding, the GLM for categorical y variable. Here x is the categorical I am looking to check the linearity between x and y here. Could you please advise with this

shahd · ‎11-24-2018

If I want to make sure about the linearity assumption Does the relationship between categorical variable and y in any model should be nonlinear as it always has the same trend. how can the other plots help me to determine the relationship and if I need any specific type of transformation

shahd · ‎11-22-2018

Hi, I need to get the scatter plots and the Q-Q plot separately (not in a matrix) and I wrote this code proc corr data=salary plots=matrix(histogram); var y x1 x2 x3 x4 x5 x7 x8 x9 x10; run; how can I modify my code using the unpack statement

shahd · ‎11-21-2018

I need to get a probability plot of deviance residual.

shahd · ‎11-21-2018

I tried this code proc univariate data=rate noprint; ppplot rate / normal(mu=10 sigma=0.3) square odstitle = title; run; but i need the p-plot for deviance residuals so it doesnot work

shahd · ‎11-21-2018

proc UNIVARIATE data=want plots=resdev ; run; This give me error

shahd · ‎11-21-2018

proc genmod data = prog plots; model rate=x1 x2 x3 x4/dist=gamma link=log type1 typ3; output out=want predicted=p; run; proc PROC UNIVARIATE data=want; plot=pplot; run; This doesn't work for me could you please modify it

shahd · ‎11-21-2018

and how can I get the pp plot for deviance residuals

shahd · ‎11-21-2018

I am beginner in SAS, could you elaborate more where should I write this in my code

Online Status	Offline
Date Last Visited	‎05-23-2019 03:07 AM

Re: cluster analysis

cluster analysis

comparing two data sets

Re: regression analysis without intercept

regression analysis without intercept

SGPLOT: X axis values

normal probability plot

Re: ordinary least square model

ordinary least square model

principle component model

Re: baseball regression model

Re: collionarity diagonistics

Re: collionarity diagonistics

Re: collionarity diagonistics

Re: collionarity diagonistics

collionarity diagonistics

best model suggestion

Re: check the variance

Re: check the variance

check the variance

Re: linearity assumption

Re: linearity assumption

linearity assumption

scatter plots

Re: plots

Re: plots

Re: plots

Re: plots

Re: plots

Re: plots