T-test and Mann-Whitney U test on groups with different sample sizes and variances?

Hello I have 2 groups with different sample sizes of (experts: 5 to 8) and (Users: 28 to 35) answering 21 questions on a 7 points Likert scale about the importance of some dimensions for...

31 January 2021 3,885 7 View

Should the working memory capacity of EFL learners be measured by L1 or L2 memory span test?

The capacity of the working memory is commonly measured by asking participants to remember a list of items and then counting how many letters they can repeat. I have noticed that for some L2...

26 August 2019 2,497 2 View

What is curtain gas in LC-MS technique?

is collision gas is the same with curtain gas in LC-MS technique? and as a whole what is curtain gas in LC-MS?

22 January 2019 2,823 5 View

How to do a repeated measure anova in spss with two unmatched groups?

We conducted an intervention study with three measurements of fear in three time points. Results showed that two groups were not matched for two demographic variables (education level &...

13 January 2019 8,071 3 View

Can we use insulin instead of injection as an eye droplet?

Many people around the world need to use insulin and they are not interested in taking medication in the form of injections. Injections also decrease the patient's quality of life. So is there...

12 October 2018 9,604 4 View

How do I invitro transcription?

Hi I am trying to do a pull down test so, in the first phase I should do invitro transcription for that I am using of T7 RNA polymerase from promega company. I designed a forward primer with T7...

12 October 2018 3,890 3 View

How can I generate property of S2 and S6 in aspen plus V10?

30 December 2017 8,150 2 View

Could anyone recommend me implicit prejudice scale except IAT?

I am currently working on a research on gender-based prejudice against Muslims and looking for a scale to measure implicit attitude and I would like to know what options we have apart from IAT scale.

11 June 2017 146 3 View

Does anyone guide me for interpretation of peaks in two dimensional gas chromatography?

How can I interpret chromatograms in two dimensional gas chromatography?

30 May 2017 3,305 3 View

Do you know any questionnaire and article about leisure and positive emotion?

I am going to do a research about the importance of leisure in life. I would be so helpful if any one suggest me the comprehensive questionnaire.

17 December 2015 5,515 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

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

How to quantitative analize the data of TNBS assay for gelatin?

Estemeed colleagues, I found some issues regarding the quantification of the data for TNBS assay. There are different protocols on how to perform that but it is clear to me the "fil rouge" that...

02 March 2021 2,616 1 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

Do you know good and user-friendly programs to measure plant quantitative traits?

For my research i will need to measure plant quantitative traits (especially leaves area and roots length, but would be nice to add some more information). I recently discovered...

01 March 2021 5,035 2 View