In SEM, while extracting the factors from a set of observed variables, is it principal component analysis (PCA) or Factor Analysis?

More Parag Sen's questions See All

In SEM, what is the physical significance of eigen value while doing principal component analysis (PCA)?

10 November 2018 7,279 4 View

What is the correct formula for availability; MTBF/MTBF+MTTR or MTTF/MTBF and why?

I am very confused about the formula for availability because it is given by uptime/uptime+downtime.

07 August 2018 6,518 4 View

In Taguchi Method, why the degree of freedom for a factor is given by formula (level-1)?

I cannot understand why 1 is subtracted from the level to find out the degree of freedom?

06 July 2018 688 1 View

What is the interpretation of (y bar square/variance) in 'Nominal is Best' method of S/N ratio calculation?

What does this ratio indicate? Please see the attached file.

06 July 2018 2,924 0 View

How one can explain the meaning of software reliability giving an example and mentioning the name of a specific software?

The functionality of a machine can gradually decrease due to tear and wear. Hence, reliabilty of a machine is an important phenomenon with time. But how the functionality of a software can get...

06 July 2018 7,795 0 View

Does failure function represent the probability density of failure rate?

If f(t) represents the probability density of failure rate, then how it it possible that f(t) will follow exponential distribution whereas the failure rate is constant?

06 July 2018 5,318 5 View

How the formula for failure rate R(t1)-R(t2)/(t2-t1)Rt1 is derived?

Please state the derivation of the formula of failure rate.

06 July 2018 1,104 2 View

What are the differences among flexible manufacturing system (FMS), computer integrated manufacturing (CIM) and totally integrated automation (TIA)?

05 June 2018 9,929 4 View

MICLASS and DCLASS coding system in group technology follow which type of coding: monocode, polycode or mixcode?

MICLASS and DCLASS coding system in group technology follow which type of coding: monocode, polycode or mixcode? Why Opitz classification and coding system is a mixed code. I can understand that...

05 June 2018 2,636 2 View

In structural equation modelling (SEM), how to collect the data of the indicators under a moderator variable (please see the explanation)?

Suppose, I have two predictor/independent variables A and B that (i.e. both A and B) affect a dependent variable D. I have also a moderator variable C that influences the relationship between A...

05 June 2018 1,063 4 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

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

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

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

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

What are the most reliable approaches to extract key continuous frames from a video, with complete automation?

I have an input video, of skin (from a microscope that means it is magnified such that blood capillaries are visible). The idea is to extract 15 sec of continuous frames from a video of 1 min,...

02 March 2021 2,735 2 View