Can one do SEM on Likert scale?

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Is the multiplication of the expected of the sum Sin and Cos will gives zero?

Hello every one, I am doing a research paper, And I want to make sure that if X is a sum of a*CosΘ and Y is the Sum of a*SinΘ my question, is the expected of E(sum(􏰃acosΘi))*E(sum(asinΘi))=0...

10 November 2018 7,029 1 View

Time series Choosing ARIMA?

Hello, Am trying to set up ARIMA model for the attached graph, can you please advice me with best setting I can use is it ARIMA (1,0,0) or any other option? Thanks

02 March 2018 5,343 1 View

How to interpret chi-square table with peak option like this table ?!

Am trying to find the relation between two nominal variables, I did chi-square test for measuring the independence between two variables, but, one of my variables has a massive frequency in one of...

07 August 2017 9,895 4 View

Normality check

I found someone say: "There are few consequences associated with a violation of the normality assumption, as it does not contribute to bias or inefficiency in regression models. It is only...

04 May 2017 3,452 16 View

Does my data need to be normal for regression and SEM?

If I decide to go for a census normality test won't be needed, but if I stick to a sample then does my data need to be normal for regression and SEM?

03 April 2017 9,018 5 View

What is the best way to check the normality of my sample?

I have a population of 552, the sample size is 227. the sample size is large compared to the population, with the non-response expected, is it better to conduct a census? What is the best...

03 April 2017 3,597 6 View

Which is best to use, Simple regression or SEM model using PLS?

Am trying to examine the effect from my independent variables using mediation effect in the middle (OCBs) toward the dependent variable (employee performance), as I knew before, I can use SEM...

01 February 2017 679 7 View

Results of Autocorrelation?

"Errors are found in this table. In the lower part of the table, all the p-values are exactly in the same (i.e., 0.000). These are impossible as at least the 13 insignificant p-values must be...

10 November 2016 7,588 0 View

How can I prepare virus for a TEM or SEM imaging?

I have virus (viral hemorrhagic septicemia virus) in suspension and the experiment will not involve cells. What level of TCID50 is preferred?

11 August 2024 3,115 1 View

How to learn more about SPSS and its Application?

I would like to learn more about SPSS and Its application especially in regards to data analysis. Please suggest me how I can learn more about it. Thank you so much.

11 August 2024 9,101 4 View

Can I base on reverse DNA sequences to perform alignment, convert to amino acids and GenBank submission?

I have reverse sequences (AB1 format), can I base on reverse DNA sequences to perform nucleotide alignment, convert nucleotides to amino acids and deposit the sequence in GenBank database?

11 August 2024 5,138 1 View

Baseline drift in HPLC? What causes this?

Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!

11 August 2024 3,770 4 View

Text-Communication from the M1 Hand Area using BCI—and then there is Elon Musk?

Willett, Shenoy et al. (2021) have developed a brain computer interface (BCI) that used neural signal collected from the hand area of the motor cortex (area M1) of a paralyzed patient. The...

10 August 2024 7,180 0 View

Handling Missing Data and Building a Predictive Model with Incomplete Information ?

I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...

10 August 2024 4,005 2 View

Has anyone applied Python in the field of textile engineering for data analysis, automation, or smart textiles?

I'm currently exploring the application of Python in textile engineering, specifically in areas like data analysis, process automation, and the development of smart textiles. I'm interested in...

10 August 2024 7,429 2 View

Is it possible to use the Fused Deposition Modeling (FDM) to additively manufacture interconnected porous structure generation of >100-200 micrometer?

Usually, additive manufacturing techniques like SEBM, SLS, and SLM are used for interconnected porous lattice structure generation with sizes of >100–200 micrometers. Can the Fused Deposition...

09 August 2024 7,892 0 View

How can I use the cif data obtained from rietveld refinement extracted via gsas2, for microstructural analysis using ETEX software?

09 August 2024 7,718 0 View

How to define an anisotropic material with asymmetric elastic compliance/stiffness matrix in ANSYS APDL?

I need to model an anisotropic material in which the Poisson's ratio ν_12 ≠ ν_21 and so on. Therefore, the elastic compliance matrix wouldn't be a symmetric one. In ANSYS APDL, for TB,ANEL...

09 August 2024 5,048 2 View