Difference between OLS regression and Quantile Regression ?

dear all, How to understand the difference between OLS regression and Quantile Regression more intuitively without referring to mathematical notations and theorems. thanks in advance

01 February 2020 2,751 3 View

How to introduce lagged variables in unbalanced panel data?

I have a dataset of unbalanced panel where in time period is 8 years but, the data is not available for completely 8 years for all the variables for all the companies. so the final sample size is...

02 March 2019 7,258 2 View

Sample size for logit model?

the sample of my data is 100 and i have 6 independent variables in the model. My dependent variable is dichotomous event. is it right to apply logit model in this case? thanks in advance

01 February 2019 6,312 2 View

Difference in the output of Artificial Neural Networks?

I am running ANN for the analysis of my data. Even I use the same architecture and same features, i am getting different results, every time a run the model. does it happen with ANN? OR there...

31 December 2018 7,010 2 View

Null hypothesis of ANOVA?

What should be the right null Hypothesis of ANOVA? 1. No difference between the means of the groups; or 2. No difference between the variance s of the groups Thanks in advance

10 November 2018 3,172 9 View

Negative R-squared for instrumental variable regression?

i run 2stage least-squares regression with instrumental variables. i got negative R-squared value of -23.416 which does not make any sense in interpretation. However, the f-statistic of the...

08 September 2018 5,104 7 View

Difference between two-stage least squares and generalized method of moments?

i am runing an instrumental variable regression. Eviews is providing two different models for instrumetenal variables i.e., two-stage least squares and generalized method of moments. how to...

08 September 2018 2,298 5 View

Kruskal Wallis test for unequal group size?

I am conducting Kruskal wallis test for testing the difference in the opinion of the respondents(measured on ordinal scale) belonging to three different groups. one group has sample size of 50,...

07 August 2018 1,448 9 View

Negative value of transition matrix parameters?

i run markov regime switching model and I got negative value for the coefficient of transition matrix parameter. How to interpret it. thanks in advance

07 August 2018 9,423 1 View

Where do companies report the value fo human resources in their annual reports?

i referred the annual reports of the Indian companeis, which are known to follow Human resource accounting. But, no information is given about Human resources in their balance sheets. where...

05 June 2018 9,486 8 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Is there any effect of different colours of light (white, red, yellow, blue etc.) on the rate of photosynthesis? If yes, why?

Light is inevitable for the process of photosynthesis reaction. Naturally sunlight plays the vital role for this process. Light may be of different colours like white, red, yellow, blue etc....

02 March 2021 7,890 2 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How can I obtain time series data by country on night-time light (brightness) ?

Hi everyone, Please, how can I obtain time series data by country on night-time light (brightness) ? I've tried, but so far all I can find are maps. I am looking for numerical data, especially in...

24 February 2021 8,625 4 View

Which polarizers are usually used to measure the birefringence of zebrafish muscles?

I already found several publications on that topic, however, the specifications for the used filters are often missing. Some more specific information than "fish is placed between to polarizing...

23 February 2021 1,934 1 View

What are difference between laser diodes, simple light emitting diodes and power light emitting diodes when operated in the visible spectrum ?

I want to illuminate a scene (small space) using LED to capture photographs or videos of some tiny objects inside the space. But am not sure if I should use a Laser LED, or simple LED or power...

22 February 2021 4,240 4 View

How to interpret this FTIR spectrum of pyrolyzed hydrochar?

20 February 2021 2,840 3 View

No title

The regenerated cellulose film was prepared by zinc chloride/H2O system. The zinc chloride had been washed away in the regeneration process, and the wet film which was not dried had uniform...

18 February 2021 9,538 1 View

How do I plot Pressure against crank angle degree in Fluent?

18 February 2021 8,390 3 View

How to get rough estimation of the concentrations of Oxygen and moisture inside the glove box?

Dear colleagues, I was just wondering if you can suggest a good method to get a rough estimation to the concentration of O2 and H2O inside the glove box as unfortunately, our glove box doesn't...

17 February 2021 1,012 3 View