r
rafreis

Rafael R

@rafreis
4.9(275)

Top Rated

Data is the new oil!

Brazil
English
About me
Hi, I’m Rafael—a data scientist, researcher and professor with 10+ years of experience turning complex data into clear insights. I hold a PhD from the University of Leeds and have partnered with researchers, NGOs and businesses to solve real-world challenges using R, SPSS and Python, from statistical modelling and machine learning to experimental design. As author of 16 peer-reviewed papers, I guarantee methodological rigor, reproducibility and actionable results. Let’s connect and drive your project forward!... Read more

Skills

r
rafreis
Rafael R
$60/hour
Offline • 
Average response time: 2 hours

See my services

Statistical Modeling & Analytics
I will perform statistical data analysis with spss, r, or python
4.9(249)
Statistical Modeling & Analytics
I will do machine learning and business analytics applications

Want to work on an hourly basis?

Tell Rafael R what you need.

$60

/

hour

Portfolio

275 Reviews
4.9

(256)
(15)
(2)
(2)
(0)
Rating Breakdown
  • Seller communication level
    4.9
  • Quality of delivery
    4.9
  • Value of delivery
    4.8
1-5 out of 275 Reviews
Sort By
Most relevant
    M

    melanieb_1996

    Repeat Client

    US

    United States

    5

    Rafeal was amazing to work with. I have minimal knowledge about all that goes into data analysis but am passionate about the subject I’m researching. Rafeal made it easy to understand, was so kind answering questions and went above and beyond to help me move forward in my research. He is by far the best...

    $200-$400

    Price

    6 days

    Duration

    gig

    Statistical Modeling & Analytics

    Helpful?
    Yes
    No
    B

    bridget_karthik

    US

    United States

    5

    Rafael is truly exceptional. He understood my project completely simply from reading the overview I sent him. His report was extremely clear. He is also quite supportive and open to revising things to meet the client's needs.

    $800-$1,000

    Price

    6 days

    Duration

    gig

    Statistical Modeling & Analytics

    Helpful?
    Yes
    No
    V

    vlt_dsm

    BE

    Belgium

    4.7

    Rafael completed an order for a statistical analysis (GLMM and LMM) in 2 days that had a 4 day deadline, and provided an extensive analysis report complete with tables, effect sizes and , multiple, detailed figures and annotated code.

    $400-$600

    Price

    5 days

    Duration

    gig

    Statistical Modeling & Analytics

    Helpful?
    Yes
    No
    M
    image-docs

    mvonsabler

    Repeat Client

    AU

    Australia

    5

    Rafael is an experienced and exceptional professional. He far exceeded my expectations on delivery for a project and I am already working on another project with him. As a research assets like Rafael are invaluable. Highly recommend him!

    $400-$600

    Price

    8 days

    Duration

    gig

    Statistical Modeling & Analytics

    Helpful?
    Yes
    No
    E

    ecarl97

    US

    United States

    4.3

    Rafael was outstanding! He has a great understanding of what measurements to use to ensure your data shines. He works hard to understand your request and the depth of your project. This allows him to build the right approach to your data. Highly recommend!

    $600-$800

    Price

    12 days

    Duration

    gig

    Statistical Modeling & Analytics

    Helpful?
    Yes
    No