Is it correct to conduct two-way ANOVA when one combination of factors has only zero values?

Hello all! I have some problems while analyzing my data using two-way ANOVA approach. I have 2 factors (one with 2 levels and the other one with 4 levels) with 3 repetitions in each factor...

01 February 2019 9,131 6 View

More chl c than chl a content in brown algae?

Hello everybody! I was extracting pigments (chl a, c and fucoxanthine) from gametophytes cultures of Undaria pinnatifida using DMSO as a solvent. After quantification, my results showed more chl...

20 March 2018 3,186 3 View

More chl c than chl a content in brown algae?

Hello everybody! I was extracting pigments (chl a, c and fucoxanthine) from gametophytes cultures of Undaria pinnatifida using DMSO as a solvent. After quantification, my results showed more chl...

02 March 2018 5,256 4 View

What is the most suitable medium for testing axenic condition in macroalgae cultures?

06 July 2017 4,566 3 View

How can I correct baseline shift in an in vivo absorption spectrum?

Hi everybody!I was making a in vivo absorption spectrum from cultured filamentous brown algae and the spectrum that I have obtained is really similar with previous reports in this kind of algae....

11 July 2016 2,155 6 View

How can I correct baseline shift in an in vivo absorption spectrum?

Hi everybody!I was making a in vivo absorption spectrum from cultured filamentous brown algae and the spectrum that I have obtained is really similar with previous reports in this kind of algae....

06 July 2016 7,392 7 View

What is the difference between biological replicates, repetitions and replicates?

Hi everybody!I was checking some books and papers related to biostatistics and I found a no clear difference between biological replicates, replicates and repetitions (especially, between the two...

05 June 2016 2,344 13 View

What kind of mixture design can I use to know the best proportions of enzymes for protoplast isolation?

Hi everybody!In my research, i m isolation protoplast from Undaria pinnatifida gametophyte using cellulase (2%) and alginate lyase (3 U/ml). I was thinking to use a mixture design in order to know...

15 February 2016 4,408 2 View

A Laminariales gametophyte culture could be considered as a true cell suspension culture?

Hi everybody!I would like to ask your opinion (especially phycologist or anybody who works with plant cell suspension cultures) about this: as we know, Laminariales gametophytes (brown algae)...

01 February 2016 570 0 View

What kind of mixture design can I use to know the best proportions of enzymes for protoplast isolation?

Hi everybody!In my research, i m isolation protoplast from Undaria pinnatifida gametophyte using cellulase (2%) and alginate lyase (3 U/ml). I was thinking to use a mixture design in order to know...

01 February 2016 4,697 3 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

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 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

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

How to find the mean, SD and CI in SPSS?

Hi, I hope that someone can help me with this task: I have 5 groups of participants which are numbered in SPSS from 1 to 5 (according to their group number) and are all under the variable group....

03 March 2021 506 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to code open-ended questions in SPSS?

Hello all, In SPSS I am going to code 2 open-ended questions. I have already read all the answers and I made a list of the most important categories to which I can code the answers. This question...

02 March 2021 1,757 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View