Oleksii S. Profile

KHÁM PHÁ

Data Processing

Report Writing

Research Writing

Statistical Analysis

Statistics

5,0

(93 nhận xét)

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$45 USD / giờ

koryukivka distr.,

ukraine

$45 USD / giờ

Hiện ở đây đang là 6:11 CH

Đã tham gia vào tháng 12 21, 2015

7 Khuyến nghị

Oleksii S.

@proffesor1

5,0

(93 nhận xét)

7,9

98%

$45 USD / giờ

koryukivka distr.,

ukraine

$45 USD / giờ

100%

Công Việc Hoàn Thành

97%

Đúng Ngân Sách

98%

Đúng Thời Hạn

20%

Tỉ Lệ Thuê Lại

Independent researcher, statistician, data analyst

I have more than 20 years experience in data analysis in the different areas (behavior sciences, economic/finance, medicine and other). I have strong statistical, economical and and psychology background. I work with SPSS, Eviews, Mplus, Excel, Stata, R, and other statistical programs. Since 2000, I have completed many projects related to analysis of different data, solving of the statistical problems, survey analysis, stock data analysis, econometric modelling and so on. I support students, post-graduated/doctoral students, independent researchers/scholars, investors, businessmen, consulting firms and so on. I have an experience in market analysis, business analysis, SEM modelling, survey analysis, CFA (MG CFA), regression, factor analysis, working with time-series, survival analysis data manipulation and presentation. I guarantee 100% and quality execution of your project. I can work 40 hours/week.

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Liên hệ Oleksii S. về công việc của bạn

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Portfolio

Time series analysis, regression, stationary testing ARIMA, ARCH, GARCH models and other financial analysis. EViews or R can be used for these purposes.

Financial data analysis using EViews

Confirmatory Factor Analysis (CFA) + Structural Equation Modelling (SEM), Multigroup CFA using Amos, Mplus, R or Stata.
Multigroup analysis (invariance testing). PLS approach to SEM using R

Structural Equation Modelling+Confirmatory Factor Analysis

Sales probability prediction and lead scoring based on the probability of sales. R language and excel. Random forest classification model + logistic regression were used.

Machine learning - sales probability prediction (R language)

Cluster analysis, client segmentation, latent class analysis, dimension reduction using exploratory factor analysis, principal component analysis and other technics. R, SPSS, Stata.

Cluster and principal component analysis, factor analysis

Kaplan-Meier plots to visualize survival curves, Log-rank test to compare the survival curves of two or more groups, Cox proportional hazards regression, Andersen-Gill Regression Model, comparison pre- and post intervention data, comparison between experimental and control group

Survival analysis (other analysis of medical data)

Analysis environmental, medical, psychological and other data with top-level quality (supporting researchers in their scientific investigation to submit articles in scientific journal or for PhD theses/other scientific papers)

Statistical support for researchers

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5,0

$265,00 USD

regression analysis

I highly recommend Oleksii for his exceptional statistical analysis skills. His ability to navigate complex data and provide insightful, clear findings significantly enhanced our project. The detailed visual representations he provided added great value. Oleksii is a true professional and a valuable asset to any research team!