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  • Correlation Analysis
  • Excel
  • R
  • SPSS
  • Statistical Modeling
  • Cluster Analysis
  • Customer Retention
  • Data Analysis
  • Microsoft Excel Dashboards
  • Psychometrics
  • Questionnaire Design
  • Regression Analysis
  • Sem
  • Statistical Consulting
  • Statistics

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  • Predictive Modelling

    $20/hr Starting at $200

    To identify “What” and “How Much” do a set of factors, influence our metric of interest. We can establish what makes the difference in your Revenue, System efficiency, Cost , Recommendation of your...

    Cluster AnalysisCorrelation AnalysisExcelRRegression Analysis
  • Questionnaire Design and Analysis

    $25/hr Starting at $200


    Correlation AnalysisData AnalysisExcelMicrosoft Excel DashboardsQuestionnaire Design
  • Customer Churn Analysis

    $25/hr Starting at $200

    Churn analysis is the calculation of the rate of attrition in the customer base of any company. It not only involves identifying those consumers who are most likely to discontinue using your service or...

    Customer Retention
  • Market Basket Analysis (MBA)

    $25/hr Starting at $200

    We use "Market Basket Analysis", also known as affinity or association analysis, to better understand buying preferences. Market Basket analysis addresses the questions: "What goes with what? Which...

  • Questionnaire validation

    $25/hr Starting at $200

    Tools for epidemiological studies need to be validated for the population under study I do Exploratory Factor Analysis (EFA) and I use structural equation modelling (SEM) for Confirmatory Factor Analysis...



Optimise your decision making

Mathematician with an MSc in Operations Research. I am passionate about data manipulation and modelling. I enjoy finding patterns and/or anomalies in datasets and presenting them. Turning data into knowledge is what inspires me.

I have extensive knowledge and experience working with SPSS for Multivariate analysis, Customer churn analysis, CRM analysis and Risk Assessment.

I also deploy R for more cutting edge analysis- predictive analytics, psychometrics, market basket analysis, mixed modelling and visual representation of big datasets.

MS Excel is another tool I utilise for quick reporting and making dashboards for my clients.

Always eager to learn and master new data modelling skills and techniques.

I am very good at interpreting graphs, charts, and statistical tables. I can prepare reports for management level in clear, understandable and simple language (no statistical jargon). I also provide technical report for your data science team

I enjoy teaching and guiding individuals to perform basic and advanced statistical techniques, as well as understanding the meaning behind the statistical jargon

Work Terms

I provide consultation on a freelance basis! You can contact me anytime via email ( or skype (ID: lefkiospaik)

Payment methods: SafePay, Paypal