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Questions related to Statistical Modeling
I'm totally confused about many parameters for assessing the model.
12 December 2014 7,835 0 View
I need to obtain the significance of the GxE factor of the ANOVA performed with multiple environments (n=8) in an augmented design with data adjusted with BLUPs (Best Linear Unbiased Predictors).
12 December 2014 3,768 6 View
Using gretl, I run my model as RE. From there, how do you test for autocorrelation?
12 December 2014 4,414 3 View
While considering studies for inclusion into a meta analysis on a particular subject, some studies (mostly with negative results) that are unpublished may remain un-included, even after best...
12 December 2014 2,788 22 View
I'm working on a flood model of an urban area. My problem is, I want to input rainfall data of a Typhoon with respect to three different gauges. I know that these gauges will give different data...
12 December 2014 7,477 9 View
From my reading and understanding, the Kaiser's criterion of eigenvalue greater than 1 and finding 'elbow' in the scree plot are two common practices (each with argument). Also, there is Parallel...
12 December 2014 1,832 15 View
I am using generalized mixed models using glmer function of the “lme4” package. Glmer() always uses Maximum Likelihood (ML) rather than REstricted Maximum Likelihood (REML)...
12 December 2014 8,418 9 View
The objectives of my ongoing work are (1) examining construct validity (2) factorial validity, and (3) cross validation with multiple independent samples in a single country context. For...
12 December 2014 3,567 2 View
I am trying to develop a mechanistic model integrating satellite images, can you help me to understand these type of modilisation. thank you very much
12 December 2014 2,648 11 View
What appropriate method (may be statistical) can be used to find the statistical significance of a particular input data series with the observed output? I am concerned about the non-linear data...
12 December 2014 3,085 6 View
Please cite works of noted authorities on the subject.
12 December 2014 8,371 27 View
Will it be helpful to estimate better reliability?
12 December 2014 2,840 0 View
Response variable is sub domains of a survey and so each measurement is between 0 and 8 (each is the sum of responses to 2 of the survey questions). This survey was taken at 4 different time...
27 November 2014 4,724 10 View
11 November 2014 9,504 11 View
I would like to know what I'm doing wrong, please. I've recoded two ordinal variables into dummy variables (one now has 3 variables and the other has 9). I need to enter them into the SAME...
11 November 2014 457 15 View
I am studying the role of a specific type of smokeless tobacco in the development of oral cancer, for my doctoral project, so originally we calculated a sample based on the exposure to this...
11 November 2014 1,808 5 View
Hi Is the non-normally distributed data appropriate in MLP-based regression? I know that normal distrubution of variables is one of the assumption of the linear multivariate regression (LMR)...
11 November 2014 6,707 3 View
If I use the actual frequency for a ramp signal to calculate phase, I get the correct phase. But if I use the estimated frequency (which has fluctuations) for phase calculation, I get phase...
11 November 2014 8,270 1 View
I want to update the standard deviation of the future data to already calculated standard deviation of existing data using statistical modelling. This should work as per the behavior of deviation...
11 November 2014 2,498 2 View
I am essentially talking about fitting a model with three independent variables. We have the data from a biological experiment where the response is showing a sigmoid fashion, thus prohibiting...
11 November 2014 7,967 3 View
Hi. When odds ratio from logistic regression have large confidence interval for data from cross-sectional study, it is suggested to use Cox Proportion Hazard Regression Models with constant time...
18 October 2014 2,755 5 View
I have been working on surface water quality physico chemical characteristics for years. I have been collecting data and use some water quality indexes to classify these water sources. I'd just...
10 October 2014 6,544 5 View
Does "Coefficient of Determination (R-Square)" provides sufficient information on how will the data fits a statistical model (line/curve) in case of non-linear regression ? I would like to know...
10 October 2014 5,327 28 View
It does not make sense to create dummy var for a var like month, where value of dec (12) can give wrong implication and distorted distribution; but for var like risk ( low, med, high, very high),...
10 October 2014 9,545 12 View