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153 questions
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2 votes
0 answers
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I would like to obtain estimates of the variance explained by each predictor in multiple regression using robust linear regression (for instance with the R function lmrob from robustbase R package or ...
CafféSospeso's user avatar
  • 1,268
0 votes
0 answers
160 views

I would like to run a generalised additive model (GAM) regression with some clustered survey data, where I fit a spline for one of the variables. I would like to estimate robust standard errors, ...
roller_coaster's user avatar
  • 1
0 votes
1 answer
121 views

I used a robust two-way ANOVA using the WRS2 package (R v.4.4.1), using the following code as suggested by Mair and Wilcox (2020) - the full dataset is on the bottom of this message: library(WRS2) ...
r.filogonio's user avatar
  • 3
0 votes
1 answer
36 views

I have computed 12 ANOVAs using WRS2 package, with the t1waybt function. I would like to be able to put all of these results into a data frame so I can view/print them all. I have tried the following ...
user26264581's user avatar
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1 vote
1 answer
2k views

Due to outliers, I would like to use a robust regression method instead of lm(). I can't decide whether to use lm_robust (estimatr package) or rlm (MASS package). Are there mathematical differences ...
Vivien's user avatar
  • 25
0 votes
0 answers
528 views

My post is a follow-up question to this one: Replacing Standard Errors in a Reg Model in R I am in search of a way to directly replace the standard errors in a regression model with my own standard ...
Julie Kafka's user avatar
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0 votes
0 answers
71 views

I am looking for a way to compare the results from two lmRob() functions statistically. Here is an explanation of what I am trying to do: My professor wants me to compare the results of two ANCOVAs (...
Han's user avatar
  • 1
1 vote
2 answers
60 views

Perhaps someone could help me to elaborate better on the title of this post. I am trying to apply the exact same formula to several sites (Australia, Mexico and France). Each site has the same ...
Drop's user avatar
  • 339
1 vote
0 answers
19 views

Please, I need help to successfully run the Stanhel and Donoho Estimator on my data to flag outlyingness. I have a four column data with the summary presented below: Data Summary I did some study on ...
Światło's user avatar
  • 11
1 vote
2 answers
485 views

I'm reading the code below in Chapter 10 in the book called Computer System: A Programmer's Perspective. I understand all the code below except the line: bufp += nread; I found this line is pointless, ...
Mary's user avatar
  • 11
1 vote
0 answers
26 views

I have time series with outliers, and I want to get a robust estimate of the trend and its t-value. For that I use lmrob, which works fine in most cases. However, in some cases, it returns -inf for ...
Tom's user avatar
  • 31
0 votes
2 answers
365 views

I was trying to fit a linear regression model using the lm function on a dataset (in R): model <-lm(DLP~gender+Kvp120+mAs+length+gantry+device_age+detectors+scanner2,data = data) and here were the ...
Hussain's user avatar
  • 111
1 vote
1 answer
51 views

I am using the package robust.arima in R, which works fine when I call it in a script. However, I want to organize my files and therefore call robust arima in a function. Here all of a sudden the ...
Tom's user avatar
  • 31
1 vote
0 answers
203 views

I used the "systemfit" function in R to estimate a 2SLS model as it allows to specify the first and second stage separately which is important for my estimation. I need robust standard ...
JJ1214's user avatar
  • 31
1 vote
0 answers
111 views

I am using library robustarima, which has an option auto.ar=TRUE. According to the description and the book (https://onlinelibrary-wiley-com.eur.idm.oclc.org/doi/pdf/10.1002/9781119214656 chapter 8 ...
Tom's user avatar
  • 31

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