Chi-square with a convenience sample, is it appropriated?

I have been read that chi-squares are not appropriate when convenience sampling has been applied. is it true?

22 January 2017 7,213 2 View

How can I asses a threatened plant under IUCN category ?

Please tell me, is it necessary to laid 1000m*5m (5000m2) transect to know the population status of a particular plant species to categorize under IUCN category ?Please help.

04 December 2016 131 8 View

How i can calculate the overall standar deviation for multi dimensions?

How I can calculate the SD for multi dimensions, if each dimension has a different items?

04 November 2016 1,673 3 View

Could Any one suggest for chromium estimation by UV Vis method using DPC?

Cr(vi) using DPC I mean what should be the ppm level to get a calibration curve. I tried but more than 10ppm the complex is very weak and gradually disappears. Any comment/suggestion is appreciated.

24 July 2016 1,559 3 View

Is there some software which alligns tRNA without loosing information about structure encode by following characters "<>." displayed on line bellow?

I'd like to align several tRNAs. They are in following form: gi|338172151|gb|CP002244.1|.trna13 (28912-28840) Length: 73...

19 April 2015 6,308 4 View

Can I use as a housekeeping gene for miRNA normalizatinon mRNA houskeeping gene (for example GAPDH)?

15 January 2015 2,108 3 View

Can I use same PCR protocol using Taqman assay for mRNA and miRNA detection?

13 January 2015 7,428 3 View

What can I use as a positive control and standards for miRNA from blood samples in PCR?

I would like to detect specific miRNA(miR-219) in human blood, I have no idea what can I use as a positive control.

13 January 2015 1,015 4 View

Chi-square with unbalanced design?

01 January 1970 6,843 3 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

How to compare two groups with only two measurements?

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...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

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...

03 March 2021 1,401 3 View