Data

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Questions related to Data

How to calculate WHO BMI for Age, z-score and percentile for 10 years to 17 years children using WHO Anthro online survey analyzer or software??

I am analyzing a dataset. There I have a group of participants whose age range is 10-17 years. I have their gender, date of birth, height and weight. I want to measure their BMI for age, z-score...

28 November 2019 5,140 6 View

Please I need your comment. Thanks. Are we right or wrong to submit to such journal or not?

Before submitting to a journal, the scope has to match the content of your submission. This is clear, however, many editors these says use this cliche statement "Thank you for submitting your...

09 November 2019 5,265 19 View

Transforming standardized Z-scores as independent (categorical) variables?

My question is about using Z-scores as independent and categorical variables. So, it is possible to create Z-scores from the scale variables and transform these Z-scores into categorical variables...

10 October 2019 9,384 4 View

How can we find a underlying Partial Differential Equation using the data?

Having a dependent variable (say V(x,t)) which has dependency on independent variables, say k(x,t), r(x), l(x), t(x), how can we find a PDE in terms of x and t?

10 October 2019 7,399 4 View

Where can I find financial data of companies (financial statements) available within long historical period and presented quarterly (1Q1999-4Q2018)?

I'm looking for a database, which contains financial statements of companies but presented quarterly not yearly. Amadeus database presents data only yearly and only for last 10 years. Do you know...

10 October 2019 2,903 4 View

How to count the occurrence of letters A-Z in a column of names in excel sheets?

I have a list of 501 names, and I need to find the occurrence of the letters from A-Z. I have 26 cells labeled A, B, C, etc, and want the occurrence of the letter from the list to go in the boxes....

05 October 2019 3,063 3 View

Is there a rule for how many parameters I can fit to a model, depending on the number of data points I use for the fitting?

I have a model that needs calibration, but I am afraid that if I calibrate using too many model parameters, I will overfit to my data, or the calibration will not be well-done. Can anyone suggest...

28 September 2019 9,625 4 View

How do I remove bad scorers from a dataset?

We let rate about 60 short stories on valence and arousal. We suspect that a few scorers have not read the short stories and have marked the possible answers more randomly or according to a...

27 September 2019 9,385 2 View

Wich is the post-hoc test for Conway-Maxwell-Poisson (COM-Poisson) distribution?

I used the Conway-Maxwell-Poisson distribution for my underdispersed count data. Now I'm interested in compare the treatment but I don't found the script for it. For the others dsitributions...

11 September 2019 6,963 3 View

Is data analysis a must in a research work?

I have seen many research works where the data collected are merely presented using the frequency table along side bar chart, and conclusions are drawn from them, without having to use tool like...

09 September 2019 8,182 3 View

CDO: how to remove points form a generic grid variable?

Hi! I am trying to make this generic grid variable (2) have the same number of points in two different files. This is so I can merge them later. The only meaningful level of this variable is...

09 September 2019 4,773 2 View

Wich is the post-hoc test for Conway-Maxwell-Poisson (COM-Poisson) distribution?

I used the Conway-Maxwell-Poisson distribution for my underdispersed count data. Now I'm interested in compare the treatment but I don't found the script for it. For the others dsitributions...

09 September 2019 6,906 3 View

How do I remove bad scorers from a dataset?

We let rate about 60 short stories on valence and arousal. We suspect that a few scorers have not read the short stories and have marked the possible answers more randomly or according to a...

09 September 2019 9,247 2 View

Is there a rule for how many parameters I can fit to a model, depending on the number of data points I use for the fitting?

I have a model that needs calibration, but I am afraid that if I calibrate using too many model parameters, I will overfit to my data, or the calibration will not be well-done. Can anyone suggest...

09 September 2019 4,265 5 View

How to model the shape of a 2D points data? Curve extraction out of 2D point cloud ?

Hello I have a scatter points data that goes in Y axis direction for while than changes to X axis direction. I want to perform Interpolation on it mainly trying to model its "shape". The linear...

08 August 2019 5,199 9 View

Are there methods for learning the transfer function of a system?

Dear colleagues, I've been researching on the application of machine learning techniques to improve the performance of complex communications systems. The main reason of using machine learning in...

08 August 2019 1,687 7 View

How to multiply import csv file to matlab and save them as an array or matrix?

Hi guys! I have tried to import serveral csv files to matlab using csvread. However, the csv file are named after the random dates. So how can i import them into matlab with loops The file names...

08 August 2019 6,891 3 View

Needed time for data transmission in power system?

Hello there, How much time does it take that a measurement unit (like power flow or power injection measurement unit), sends its data to the main control unit of power system? * Assume we are...

07 July 2019 4,992 4 View

How to combine multiple data sources?

I have two data sets. Data set A: data about lifestyles, health conditions and SOCIOECONOMIC and Data set B: data about travel behavior and also SOCIOECONOMIC. We don't know whether they are the...

06 June 2019 4,765 4 View

Best Neural Network for Error Prediction of a Physics Model?

I have physical model prediction data as well as actual data. From this I can calculate the error of each prediction data point through simple subtraction. I am hoping to train a neural network to...

06 June 2019 1,313 3 View

Where can I find or contact to get infos about deaf federal workers database?

I am hoping to get most updated infos about data on deaf federal workers/employees that got hired, got rejected, sued/cases against federal agencies for violated ADA rights and more. Thank you

06 June 2019 6,531 4 View

Infant Mortality, Child Mortality.... "Youth Mortality"?

For a paper concerning the "Child Survival Hypothesis" i would love to use "Age of majority percentage" data, though could not find any in world bank data. Child Mortality is „percent of children...

06 June 2019 7,588 3 View

Is it possible to download data using CRSP in time-series format rather than in panel-data format?

Dear Community, For my Master thesis I need the data on stock prices of all firms listed on the NYSE, NASDAQ and AMEX. The database I use is CRSP. For my analysis, I need the data in time-series...

07 May 2019 4,326 2 View

Is it possible to download data using CRSP in time-series format rather than in panel-data format?

Dear Community, For my Master thesis I need the data on stock prices of all firms listed on the NYSE, NASDAQ and AMEX. The database I use is CRSP. For my analysis, I need the data in time-series...

05 May 2019 3,278 2 View

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