Data, transformation, satatistics

More Reda Rabie's questions See All

How reliable is assessment in online environments? What measures are taken at your institution to guard against cheating?

The issue of reliability in online education has to be seriously addressed to ensure the identity of exam-takers and that the answers they provide are the result of their own work.

21 May 2020 720 3 View

Do you think peer assessment is valuable to the assessment process, or learner progress?

Peer assessment helps students to be more objective about their own learning and it can assist learning, it is argued. Its worth to student evaluation would perhaps be questionable too.

23 April 2020 3,745 3 View

Under COVID-19 conditions, what is being done at your locality to help underprivileged school children make the most of distance online learning?

Adverse consequences to school closures due to the pandemic are known to everyone. Those underprivileged learners with limited parental assistance and/or fewer opportunities to access technology...

11 April 2020 3,582 17 View

The variables of a single item are they not included in the formula for calculating the GOF index when using the PLS approach?

can someone provides me with some references about that ?

31 March 2020 7,402 3 View

How to find an equivalent ciruit (RLC) for a parch antenna?

Hi, I'm looking for a patch to simulate an antenna, ie, find its equivalent electrical circuit (RLC), so can anyone explain the process to me? Thank you

27 March 2020 2,749 4 View

How do you go about helping first-time researchers identify an interesting and practicable research focus?

Postgraduate students are often at loss searching for answers to the question of 'what is a suitable focus for my dissertation? Lately, I found that inexperienced staff members also go through...

11 December 2019 8,549 3 View

How to measure the diameter of human skeltal muscle myotubes using image J?

Is it possible to measure the diameter of myotubes from live cell images using an inverted light microscope without fixation or staining? if not what are the minimum requirements to do so?

23 July 2019 5,518 2 View

What journals can be recommended for novice authors in EFL teacher education research?

Novice authors wishing to publish in an international journal are often lost for choice when deciding where to send the first draft.

16 February 2019 9,970 3 View

Does anybody know a company specialized in platinum machining?

Good day! Does anybody know a company providing on-demand platinum machining service? Thank you in advance for your help! Kind regards, Reda

14 February 2019 9,275 3 View

How can i design a a primer for a specific gene which is not recorded before (not in ncbi )?

SPECIES(HAS NO DATA ON NCBI) BARCODING

28 December 2018 7,388 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'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

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

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

Grazyna Wilczek

I am afraid I do not understand clearly your question. The skewness of what data do you have in mind? Anyhow the most important element of any experimental data is repeatability and reproducibility. Once these two elements are there, then you can worry about other aspects.

Reda Rabie

i want do calibration between X variables and Y. when i calculate the skewness of Y i find a big skew might be this skew can disturb my calibration performance

what we should do if i find a big skewness in Y DATA ?

Mehmet Guven Gunver

a new paper dealing with skewness

Article TO DETERMINE SKEWNESS, MEAN AND DEVIATION WITH A NEW APPROAC...