# Questions tagged [error-message]

Refers to errors generated by a computer program or a statistical package. Make sure your question is related to STATISTICS, MACHINE LEARNING, or DATA ANALYSIS and is not solely about programming, support, or bugs. Include additional tags referring to the statistical issues involved.

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### Backtesting GARCH model [closed]

Hi I am wondering wether the tgarch model is better for predicting volatility than regular garch I built a garch model in R and im trying to predict future 1 day volatility of this equity I am ...
110 views

### statsmodels ARIMA predict function on in sample data points [closed]

I'm trying to use the ARIMA predict function to predict on any test sample--this could include both in sample and out of sample data points, however the frequency will be fixed and equal to the ...
28 views

### How to generate a VAR(1) model? [closed]

I already written the code but something went wrong and I don't know why... here is the code. ...
103 views

476 views

### No fitted ARIMA model

I wanted to fit an ARIMA model to a daily database for three years but auto.arima couldn't find a model and showed the following error: ...
1k views

### Using GP_fit() of GPfit package in R [closed]

I am trying to work with Gaussian process through GPfit package of R but every time I use GP_fit() of this package, either it ...
2k views

### Tukey for GLM can't find data in model

I fit a GLM to a dataset. Now I want to see where the difference between my groups is, so I tried to run a Tukey HSD as a post-hoc test. Because of it is a GLM, I can't use ...
395 views

### Nonlinear regression

I have some functions of $x$, in the form of $d\sqrt{x}$ or $d\log(x)$ where $d$ is known. I would like to rewrite (approximate is fine) them in the form $a/(1 + bx^c)$, where $a$, $b$ and $c$ are ...
416 views

### Error message with robust regression in R

Whenever I run a robust regression model in R with rlm and with either M or MM methods, I get the following error message: Error: 'lqs' failed: all the samples ...
351 views

I am using a mixed model to assess the effects of various treatments on bee behavior (e.g., avoidance frequency - total avoidances per total visits; feeding frequency, and mating frequency). Bee ...
2k views

### Caret with rxDForest as custom model

I'm trying to use the train function from the caret package to tune the parameters of the rxDForest from RevoScaleR package (I ...
4k views

### Warning message in auto.arima

I am using auto.arima() for prediction, and getting the following warning message. I want to know if I can ignore this warning message or if I should be worried. <...
737 views

### Joint trivariate normal density

I now introduce the problem: Let assume $\mathbf{z} = (z_1, z_2,z_3)$ be a trivariate normal variable. I want to find the covariance matrix of $\mathbf{z}$. I now that the density of $(z_1, z_2)$ is ...
809 views

### Outliers causing Heywood case in CFA using MLM estimator in lavaan

I am trying to perform a CFA on data (10 indicators: $n=300$) that is severely non-normal but continuous (counts of a clinical behavior over a period of weeks): many cases are at zero, a fair few ...
15k views

### Warning (in R): “ANOVA F-tests on an essentially perfect fit are unreliable”

I have the data: numbers <- c(0.176, 0.005, 0.022, 0.016, 0.036, 0.095, 0.069 ) Inds <- as.factor(c("P06", "P07", "P08", "P09", "P10", "P12", "P13") ) and ...
74 views

### IVEware warnings

When using SAS callable IVEware for multiple imputation it will occasionally throw out a warning for too many iterations. Can someone give me an idea of how many warnings are acceptable (if any) for ...
53 views

### Ecalp function on R

I am doing some model validation and calibration of training data fit to use with glm and gam models, and I am having a problem with the ecalp function. Does anyone had this problem before? Any ...
72k views

### Warning in R - Chi-squared approximation may be incorrect

I have data showing fire fighter entrance exam results. I am testing the hypothesis that exam results and ethnicity are not mutually independent. To test this, I ran a Pearson chi-square test in R. ...
1k views

### Unable to fit repeated measures in R

I've been trying to fit a repeated measures model in R using lmer but I get an error message. I've used SAS in the past and I was able to fit a somewhat similar ...
2k views

### Odds ratio with zero cell counts

I am trying to run a binomial GLM but have some zero cell counts resulting in estimates of +/- infinity. In the text book "An Introduction to Categorical Data Analysis" Agresti A. (1996) it suggests ...
48k views

### Logistic predict.glm() function error: factor has new levels

I fit a logistic on three numeric continuous variables, followed by a categorical factor [Y, N]. ...
8k views

### Using correlate in Stata to compare within a variable

I am trying to compare correlations between subgroups of a variable. For instance, I am trying to compare the income of group 1 v. income of group 2 v. income of group 3 v. income of group 4, where ...
3k views

### Compilation error in JAGS

With this data: ...
3k views

### rknn - Error: too many ties in knn

I am trying to run rknn with rknn package but it appears an error I am not able to understand. Here's the code and the error: ...