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Questions related to Statistical Modeling
I am running a statistical model with a dichotomous categorical dependent/outcome variable, 5 fixed effects/independent variables/predictors (4 categorical and 1 continuous variables) and two...
07 July 2015 2,571 15 View
I want to work with response surface methodology for the optimization of the treatment conditions of wastewater, for this i required design of expert is Stastical tool. please any told me that...
07 July 2015 6,349 2 View
Hello, I have been trying to test a moderated mediation model with two moderators using lavaan package in R. I read some of the answers about moderated mediation with SEM, but I still have a vague...
07 July 2015 1,525 10 View
the summary() of a model.avg made with MuMIn in R, give a lot of interesting results, in particular model averaged coefficients (estimate, standard error, adjusted standard error and a z value...
05 May 2015 6,714 5 View
05 May 2015 6,186 6 View
I have to compare the mean levels of a continuos variable y (ranging 1-20) subdividing my sample in two groups according to a dichotomous variables (i.e gender). Sample sizes of the two groups are...
09 April 2015 9,450 4 View
There I am using a specific RCT design described by Zelen et al. where randomization occurs prior to consent and only those subjects who were allocated to the treatment group would be consented,...
04 April 2015 675 3 View
Hello, I am estimating a model in Smartpls 3.0 and I want to use the consistent pls procedure. I have done EFA in SPSS and the factors should be OK. What I am a bit surprised to see is that the...
04 April 2015 5,959 6 View
04 April 2015 5,085 5 View
I have behavioral data (feeding latency) which is the dependent variable. There are 4 populations from which the behavioral data is collected. So population becomes a random effect. I have various...
04 April 2015 9,819 7 View
The selection of input variables is critical in order to find the optimal function in ANNs. Studies have been pointing numerous algorithms for input variable selection (IVS). They are generally...
04 April 2015 5,776 6 View
I would be grateful for pointers to tight bounds fo the cumulative distribution of a multinomial (tight meaning tighter than the lower bound that can be obtained from the union bound ! pointer to...
26 March 2015 4,634 4 View
For best fit the statistical quantities used as performance indicators should move close to zero. Sometimes the model efficiency (NSE) is exceptionally good but performance indicators...
22 March 2015 2,801 3 View
I am presently using the mediation package in R-statistics and am trying to fit the mediator using an ordered probit model. The problem is that I return the following error: "insufficient...
19 March 2015 9,095 3 View
I used survey data for individuals to identify the significant variables that contribute to the evacuation decision. This was done through using backward step-wise method of the logistic...
09 March 2015 4,597 8 View
03 March 2015 483 9 View
03 March 2015 4,962 5 View
03 March 2015 5,434 3 View
03 March 2015 8,573 3 View
Hello I´m looking for the best process to create group within a variable. For example, how to group age with minimum 24 and maximum 81. I ever use quantile. But the limit is that only i can get 4...
03 March 2015 4,453 10 View
I have developed three neural network models for monthly rainfall forecasting the first has three input, which is the values of the previous three months. the second has six inputs and the third...
03 March 2015 868 5 View
I don't know my question is correct or not ?
03 March 2015 9,439 8 View
I have got panel data of 200 companies for 10 years, i.e. 2000 observations. For example, if I collect macro-economic data of GDP (per year data) for 10 years it will be 10 observations . How do I...
03 March 2015 385 9 View
I'm specifically interested in electoral volatility. It measures the aggregate change in votes across all parties between two elections. But what if the distance between elections (in years)...
02 February 2015 9,594 2 View