How to measure the validity and reliability of test scale?

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Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View

Post evaluation of close range photogrammetry experiments ?

I am performing a simple close range photogrammetry test and comparing outcomes of photogrammetry tools such as VisualSFM, Meshroom, Colmap etc. Kindly advice, what post evaluation tests/ criteria...

13 February 2021 6,410 3 View

In your experience what is the difference between G.652D and G.655D optical fiber. In field and in lab?

In our current era there is a big confusion about the usage of G.652 and G.655 optical fiber cable. Theoretically G.655 is much better than G.652 but the operator feel that G.652 is giving almost...

11 February 2021 4,006 8 View

Various schools have emerged in the study of comparative literature. Mention the most prominent of them in a nutshell.?

Various schools have emerged in the study of comparative literature. Mention the most prominent of them in a nutshell. And he talked about one of them?

09 February 2021 1,099 8 View

Data balancing before test/train split or only training data balancing. which is correct?

While reviewing technical articles, I encounter some papers where authors have used data balancing before splitting test and train (on full data), and some only balanced training data and let the...

04 February 2021 1,446 0 View

How can we measure disease severity of a pathogen in a crop?

severity index, measuring method and procedure detailed

01 February 2021 1,160 11 View

Why some of the citations shown on google scholar profile are not added in RG and vice versa?

I have a couple of citations on one of my papers shown in my google scholar profile, but they are not mentioned in the Research Gate profile. Some of the authors who cited my research paper are...

01 February 2021 3,131 8 View

Why can't ANSYS Mechanical APDL detect the volume of my design ?

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28 January 2021 2,962 3 View

How to add journals not listed on Research Gate ?

I have two publications one listed in the web of science master list " European Online Journal of Natural and Social Sciences " ISSN: 1805-3602 and Second " Journal of Managerial Sciences"...

26 January 2021 7,158 7 View

How can I remove bubble in WPU film?

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26 January 2021 701 1 View

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

How Relativistic effects is one reason for lanthanide contraction?

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01 March 2021 2,272 4 View

What is the most reliable source to get Impact factor of journals?

Source to get Impact factor of journals

01 March 2021 6,654 2 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

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28 February 2021 2,004 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

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28 February 2021 5,415 1 View

Which index or sites are reliable in determining of plant species?

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26 February 2021 3,404 10 View

Can anyone share his experience regards Smoothing in origin?

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26 February 2021 8,183 3 View

How to calculate battery consumption for IoT device?

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25 February 2021 8,749 6 View

How vulnerable is water and wastewater infrastructure to cyber terrorism in an age of IoT?

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24 February 2021 2,750 4 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

Metin Ozdogan

It should be statistically representative. The more the samples, the more reliable the results.

H. Naderpour

Please read the following article:

https://courses.lumenlearning.com/suny-hccc-research-methods/chapter/chapter-7-scale-reliability-and-validity/

Thanks for the link.

Abdul Hadi

Metin Ozdogan and H. Naderpour thank you so much