Questions tagged [method-comparison]

Questions about comparisons of different statistical methods

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9
votes
1answer
32k views

How to compare the strength of two Pearson correlations?

I've been asked by a reviewer if the Pearson correlations (r-values) presented in a table can be compared to each other so one can claim that one is "stronger" than another (other than just eyeballing ...
11
votes
5answers
9k views

What ways are there to show two analytical methods are equivalent?

I have two different analytical methods that can measure the concentration of a particular molecule in a matrix (for instance measure the amount of salt in water) The two methods are different, and ...
10
votes
3answers
5k views

2-Gaussian mixture model inference with MCMC and PyMC

The problem I want fit the model parameters of a simple 2-Gaussian mixture population. Given all the hype around Bayesian methods I want to understand if for this problem Bayesian inference is a ...
14
votes
1answer
508 views

Predictive performance depends more on expertise of data analyst than on method?

I've come across a rumour that some study showed that the performance of predictive models depends more on the expertise of the data analyst with the chosen method than on the choice of the method. In ...
7
votes
1answer
1k views

Is stratified meta-analysis more or less objective than meta-regression?

Reviewer asked me why I use meta-regression as a way how to deal with heterogeneity among effect sizes instead of conducting stratified meta-analysis. I tried to google "stratified meta-analysis" and ...
8
votes
5answers
729 views

How to assess repeatability of multivariate and method-specific outcomes?

Method "A" describes biological samples using multivariate "fingerprints" that consist of about 30 different variables. Different variables show different typical distribution and many of them closely ...
3
votes
3answers
6k views

how can i compare two groups of data?

I asked a question here how can i see if my data are coming from two different population? and seems like I cannot correctly communicate and the person who is writing to me is making me confused. So ...
1
vote
1answer
228 views

Performance comparison between reduction techniques

If I want to compare the performance of PCA and PLS with nonlinear data, what do I have to measure ? I know that I can use the MSE (but if I do not use a linear profile, I can't estimate the ...
1
vote
1answer
769 views

How to determine signficant difference between 2 curves?

I have data on age, gender and weights of children. For example: ...