Mauricio A. Urbina

5 Questions 32 Answers 0 Followers

Questions related from Mauricio A. Urbina

Can we run an ANOVA if we have only "cero" values (0) in some treatments?

Lets say we have 5 treatments, and 4 replicates per treatment. However, we have "cero values" (0) in 3 of the treatments and then at least numbers in the other 2 treatments. We are getting some...

07 July 2014 5,549 9 View

Gut pH in crustaceans?

Hi all, I will appreciate if you could direct me to a paper where I can find the stomach pH in crustaceans. I am sure it will vary between species, yet any data will be useful and much...

06 June 2013 4,504 6 View

What transformation shall I apply to data expressed in percentage before running stats on those?

I have raw data expressed in their respective units, but I am interested in testing if the contribution to a total value change with my treatment. Therefore, more than if the number is different I...

10 October 2012 7,716 2 View

In mixed effects model, (R) what exactly implies that the response variable (RV) relates to the predictors as + or as *?

I am trying to test if a scaling relationship (oxygen consumption vs body weight) chance under different conditions (say 1,2,3,4,5,6,7). All conditions were tested in the same animals and...

09 September 2012 5,048 5 View

How can I statistically test if a slope (scaling) extracted from my data set (n=78) is different from a theoretical value (i.e. 0.75)?

Hi all, I will appreciate your statistical advise on how to compare a slope extracted from my data set, therefore with 95% CI, is it different or equal to a theoretical value (i.e 0.75)? Huge thanks!

08 August 2012 6,571 8 View