All Questions
Tagged with r regression
4,765
questions
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16
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Regression with a 0-1 variable. Should be the same as running a t-test, but I get a different p-value [migrated]
I have a dataset in R where I have volatility estimates (in my case, just standard deviation of minute returns on that day) for different days:
Date, Volatility, DayType
The variable DayType is 0 or ...
- 86
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41
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Problem with dynamic linear model -> lagged variable explains 100% of my model [closed]
I created a regression model, which regresses a cycle component onto a lagged cycle component and various other variables.
It looks like this:
regoffice4 <- dynlm(
diff(diff(officecycle,1),1) ~ ...
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28
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PISA 2022 data R Support
for my dissertation I am using the PISA 2022 dataset. I am using RStudio for this purpose. I am not good at R (I am a humanities student who did a conversion data science degree, which I regret as I ...
- 11
1
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1
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39
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Need help using "reframe" to run multivariate regression across multiple data sets (changing model from one year to multiple years)
I have a simple multivariate regression model testing the impact of two variables on another over one year (1971). I have a large data set that includes these data over a number of years and am being ...
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How to perform model comparison based on multinom( ) function of nnet package in R? [migrated]
My independent variables are gender and sequence, and the dependent variable is intervention (including 3 intervention methods). I established a multinomial logistic regression model to examine the ...
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1
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32
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NA values when using avg_predictions() from marginaleffects with a flexsurv model
I'm unsure why I do not get standard errors or confidence intervals when I fit parametric survival models and compute the predicted mean survival times using the avg_predictions(). I tried using ...
- 15
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How do I correctly specify nesting in the sommer R package?
I accustomed to lme4 where it would be simply: (1|genotype/root_ID) but it's unclear to me looking through the documentation the appropriate way to do this in sommer.
mod1 <- mmer(Y ~ 1,
...
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2
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45
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Export latex table from summary of rddensity function in R
I am interested in exporting the summary of the rddensity function in latex in R. I've tried to use modelsummary without sucess, and capturing output also hasn't worked out. My objective is to export ...
1
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1
answer
38
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Error when ploting the original date with the predictions of the best models using curve()
I'm trying to plot the original date with the predictions of the best models using curve() because I'm working with polynomial models, but I keep getting this error:
Error in curve(predict(best_models\...
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Correlation alternatives / How to go about testing this relationship? [migrated]
I have a large set of temperature data from upstream and downstream gauges. I am trying to find the influence of dam release on downstream temperatures. To do this, I am comparing correlation between ...
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Similar regression table with modelsummary as fixest with etable()
With fixest one can use etable() to produce regression tables of the form
library(fixest)
library(modelsummary)
data("trade")
lm1 <- feols(log(Euros) ~ log(dist_km), trade)
lm2 <- ...
- 89
3
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answers
89
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How can I specify and visualize an interaction in a rms cph model without the main effects included, i.e. with column?
I have a time-to-event model (cph or coxph) with an interaction of a binary and a continuous variable. It works with a *, but it does not work with :. Why is that?
library("survival")
...
- 821
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votes
1
answer
45
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Regression Line help in ggplot2
I am trying to add a regression line into my ggplot. Below is the code I am using to make the plot. I am wanting to plot the regression line in the first plot (L5andDownTempAvgPlot) but keep running ...
- 39
1
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1
answer
201
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"Error in initializePtr(): function 'cholmod_factor_ldetA' not provided by package Matrix" gets displayed while trying to generate mixed effects model
I have already tried the previous solutions displayed by some users. I have tried removing and reinstalling Matrix and lme4 packages. To make matters worse, now R is unable to install lme4 or Matrix ...
1
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1
answer
51
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Error in lm.fit(x,y,offset = offset, singular.ok,...) for exponential lm() model in R
I am trying to apply a exponential regression on the given data frame :
df <- structure(list(Type_stat = c("Vitesse_min", "Vitesse_max", "Vitesse_min",
"...
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