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Questions related to Advanced Statistical Analysis
I am examining the interaction effect of Sex (male, female; between-subject factor) and Time (11 levels; within-subject factor). I would like to adjust for a time-invariant covariate. In the...
30 August 2021 3,170 5 View
I have couple of questions and will really appreciate it if you can help me with them: 1) I want to test if different age groups (IV) will score differently to punitive and rehabilitation...
18 August 2021 8,474 5 View
I'm interested to test the robustness of an outcome definition using different cut-off points (e.g. 80% of pills taken vs. 90% pills taken to define adherence). Many articles reported such...
16 August 2021 3,043 8 View
We have nominal parameters in our study. I can calculate p, chi square (1), sensitivity, specificity, accuracy and AUC by using Logistic regression for a nominal parameter. However, Hosmer...
20 July 2021 5,710 5 View
Hi, I am working on a project concerning maintenance processes with the help of Augmented reality, the focus is on the repair of a CAN bus system. The system gives multiple errors: door PLC error,...
05 July 2021 6,333 0 View
In my current project, I want to answer if various cognition items (ratio, 30+ of them, may get reduced based on a separate factor analysis) predict moral outrage - in other words, do increases in...
29 June 2021 2,351 4 View
How can we use RSM when we have three levels? FCC with alpha = 1?
02 June 2021 7,107 5 View
Dear colleagues, I am in process of preparing the research methodology of the doctoral disertation. I formulated hypotheses but now I am not sure how to test some of them, specifically which...
01 June 2021 4,616 12 View
Hi all, so i have a time series of temperature and depth. i created bin depth and temperature and calculate the time at depth and time at temperature per each bin and split it into night and day...
01 June 2021 7,225 4 View
Hi, I am currently working on a research project with the title "How does internet use affect trust? An intergenerational comparison." I'm essentially running an ordered logit model, with the...
14 May 2021 3,058 4 View
Dear Experts, It is stated: for 15 pairs of data, with 5% significance level, R2 values should be higher than 0.2601. how can I know such R2 value for 540 pairs? how can I find this certain...
05 May 2021 1,302 3 View
Hi! I would like to do a latent class analysis with ranking data (in MPLUS). Adolescents ranked 5 areas of life according to their personal importance from 1-5 (e.g. 1 school, 2 peers, ...). My...
26 April 2021 3,399 2 View
So i'm doing a meta analysis, and i have some question about a study that i have. This is the data for one group(lower intensity group): pre intervention mean(SD): 274(70.5) post intervention...
10 April 2021 290 11 View
I'm having trouble interpreting the results of some recent bayesian mixed effects models I ran. I am looking to predict a continuous outcome variable ('accuracy') from a binary, dummy coded,...
08 April 2021 9,094 11 View
Hi, I am currently working on a project titled 'How does internet use affect interpersonal trust, a comparison across 4 European countries'. However, I have been struggling with deciding on which...
06 April 2021 723 6 View
Hello! In my last question, I asked a question about how to analyze a dataset with an ordinal dependent variable and multiple categorical independent variables. Here's the question if you'd like...
15 March 2021 1,874 7 View
I'm trying to calculate SD from 95% CI to do a meta analysis. i have a mean change of 6MWD test from pre intervention to post intervention of pulmonary rehabilitation groups which is 12.7(-27.1,...
15 March 2021 655 3 View
Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...
04 March 2021 9,501 3 View
What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...
04 March 2021 1,935 3 View
I am trying to make an SEM model in AMOS for my dissertation but having some trouble with getting a good fit. I am looking for relationships between self-efficacy reported on a Likert scale and...
27 February 2021 8,873 4 View
I'm in the process of doing a meta-analysis and have encountered some problems with the RCT data. One of my outcom is muscle strength. In one study, I have three different measurements of muscle...
26 February 2021 7,853 3 View
I want to run 5 different models to estimate stream flow. In order to optimize the characteristics of these models I use Taguchi method. So I have to run different models according to the Taguchi...
12 February 2021 8,140 6 View
I have a dataset from a questionnaire that consists of a dependent variable called skill level. This is an ordinal variable that has dummy coded values 1-5. I also have multiple (up to 10)...
06 February 2021 3,697 5 View
I have two datasets (measured and modelled). I want to calculate 95% confidence intervals for RMSE. Cany anyone please help me with this? Thank you in advance
05 February 2021 5,883 6 View