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Questions related to Statistical Techniques
I have some data collected from 400 high school students and need to analyze for age and gender based differences. Unfortunately, male samples account for 3/4 of my sample. I was planning to use...
02 February 2015 9,744 7 View
I would like to know how can we compare two groups when both the groups have unbalanced panel data. What statistical technique or method can be used on such data?
02 February 2015 1,291 9 View
Lake depth plays important role for estimation of pollutants concentration at different levels of lake water. I need expert views about the application of statistical tools for relating water...
02 February 2015 9,909 4 View
I am interesting in calculating sample size for a descriptive design, quantitative research method study. I will use a nonprobability (purposive) sampling technique. Realizing that a probability...
02 February 2015 6,631 13 View
Research on Retail service quality and customer loyalty is being carried out presently by me. Brief Description of the Study: In our Scope, Retail Service Quality is considered as the independent...
17 January 2015 7,245 15 View
Chi-square is a statistical test commonly used to compare observed data with data we would expect to obtain according to a specific hypothesis. If we have two categorical variables both of them...
01 January 2015 6,683 47 View
I am trying to run a series of generalized linear mixed models (GLMM) with participants nested within schools nested within countries. My target variable is children's travel mode to school...
01 January 2015 6,790 1 View
01 January 2015 1,549 16 View
Meta analysis is a qualitative technique to get evidence based results from various primary studies regarding public health issue, but some public health experts prefer a multi- centric. Please...
12 December 2014 1,431 0 View
Some notation: ECG = ElectrocardiogramRR = RR interval (the time elapsing between two consecutive R waves in the ECG; the interval from the peak of one QRS complex to the peak of the next as...
24 November 2014 8,909 18 View
11 November 2014 2,524 19 View
Hi everyone. I've run the Wald test for zero interactions and found out that there is an interaction effect in my regression model. Then, I tested my model for Multicollinarity using VIF and found...
19 October 2014 1,319 13 View
I am looking for statistical methods used to compare frequency of observations between two groups. Students in Group A (n=23) and Group B (n=48) wrote an essay, and I counted the occurrence of...
10 October 2014 812 22 View
For data that have a multiplicative or propagative nature, it is advised to use geometric mean as a summary statistic for data description. This is normal because extreme values or outliers are...
30 September 2014 1,614 11 View
I'm comparing two adherence diary designs to an objective measure (an accelerometer - all will measure how much participants walk each day) and I want to assess how closely each diary relates to...
12 September 2014 4,357 6 View
09 September 2014 8,978 12 View
I am having problems with my GLMM analyses deleting cases (e.g. 164 of 256 long format cases) based on missing variables. The whole point of performing a GLMM rather than mixed ANOVA/SPANOVA was...
09 September 2014 3,899 3 View
Hi, we have done a association study by SAS using proc GLM. Obtained results showed no significant association between observed genotypes and studied traits (model was non significant), but we saw...
09 September 2014 1,308 2 View
See above
09 September 2014 9,507 7 View
09 September 2014 608 7 View
04 September 2014 6,558 7 View
I am doing a research on factors affecting knowledge and attitudes of adults towards illegal abortion. I am not so good in statistics. However, I try to analyze my data last few days. Please see...
30 August 2014 6,069 11 View
08 August 2014 5,719 12 View
Give detailed explanation
14 July 2014 8,424 5 View