Can I do a T-test between males and females for a single likert item?

01 February 2016 800 11 View

How can I fit a Hierarchical regression with 2 categorical and multiple scale variables in SPSS?

How can I fit a Hierarchical regression with 2 categorical and multiple scale variables in SPSS?

01 February 2015 9,649 3 View

How can I measure heterogeneous variables along a road segment?

I am not sure how to design the sampling plan. It is time consuming to measure the variable along the entire road (200 km. Aprox). How many samples are statistically representative? Should I think...

11 December 2014 2,654 14 View

How to represent human-machine systems?

I need to draw the interaction and different modes of driving with GPS

04 May 2014 3,577 2 View

Does anyone know the best way to report several logistic regressions (different responses, same independent variables) in a journal article?

Some examples? Recommendations?

02 March 2014 8,380 5 View

What should be considered as an indicator of the editorial process speed in scientific journals?

I usually consider the number of issues per year. But I want to know other strategies you usually do to estimate the editorial speed? Any idea where can I consult this?

02 March 2014 769 6 View

What do you think about to ask other researchers to review my working papers in order to receive prior feedback?

I think that platforms like Open Review could help with this. It is true that this could help to improve my work in order to get high impact publications, but I want to hear the implications.

02 March 2014 2,251 1 View

Is the affiliation of an author related with his/her actual position or the place where he/she made the research?

I am interested in know, what is the correct practice when you change your position and have some unpublished research results (without any specific funding). Is it appropriate to use both...

02 March 2014 6,092 11 View

Does anyone know the best way to report several logistic regressions (different responses, same independent variables) in a journal article?

Some examples? Recommendations?

28 February 2014 7,434 4 View

I have one binomial variable associated to two (or more) groups. Which is the best test for identifying proportion differences?

Any online tools?

10 November 2013 5,444 6 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

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

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 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