Eder Coimbra

3 Questions 2 Answers 0 Followers

Questions related from Eder Coimbra

How to determine/find the "ideal design sample space" in the Doehlert Experimental Design?

When validating the Doehlert Matrix Design, do we encounter the issue of the "ideal sample design space"? I mean, in designs like the Central Composite Design (CCD), validation is usually...

22 September 2023 9,719 1 View

Can duckweeds change the pH of the medium that much?

I have been growing duckweeds in Clark solution (pH 6.5) and have noticed a 2 log pH shift down . I have checked the solution (blank) and there is no pH change in it. Does anyone know of an...

18 February 2022 3,823 2 View

How to compare two Spearman coefficients?

I have two significant Spearman coefficients from independent groups and I need to compare them. However, one negative (-0.421) and one positive (+0.601). When I apply Fischer's Transform Z test...

09 June 2021 1,739 4 View