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Mariel Andrianavalondrahona

Statistical Consultant — Sampling & Quality Control for Data Annotation

Madagascar flagAntananarivo, Madagascar
$20.00/hrEntry LevelOther

Key Skills

Software

Other

Top Subject Matter

General Data Annotation Quality Control
Humanitarian & Social Science Data
Medical Domain Expertise

Top Data Types

TextText
ImageImage

Top Task Types

Classification

Freelancer Overview

Statistical Consultant — Sampling & Quality Control for Data Annotation. Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal, Proprietary Tooling, and Other. Education includes Master of Science, African Institute for Mathematical Sciences (2026) and Engineer in Statistics, National School of Statistics and Applied Economics (ENSEA) (2019). AI-training focus includes data types such as Text and labeling workflows including Classification.

Entry LevelEnglishFrenchMalagasy

Labeling Experience

Baseline survey, Vitamin A supplementation — Data Annotation Consultant

OtherTextClassification
For the baseline Vitamin A supplementation survey (Helen Keller International), I contributed to survey design, tool development, and data processing. I ensured annotation protocols and reporting of labeled nutrition survey data. My responsibilities included implementing quality control for accurate labeling. • Designed and maintained annotation schemas • Processed and analyzed nutrition survey data • Applied quality control and data validation • Authored reports based on labeled datasets

For the baseline Vitamin A supplementation survey (Helen Keller International), I contributed to survey design, tool development, and data processing. I ensured annotation protocols and reporting of labeled nutrition survey data. My responsibilities included implementing quality control for accurate labeling. • Designed and maintained annotation schemas • Processed and analyzed nutrition survey data • Applied quality control and data validation • Authored reports based on labeled datasets

2026 - Present

IPC Level I Analyst

OtherTextClassification
As an IPC Level I Analyst, I classified and scored food insecurity and malnutrition datasets using international frameworks. I applied standardized labeling protocols (IPC) and produced validated datasets for policy use. My outputs informed national policy and funding decisions. • Applied international labeling frameworks • Labeled and scored humanitarian datasets • Produced peer-reviewed outputs from classified data • Supported national analysis and reporting

As an IPC Level I Analyst, I classified and scored food insecurity and malnutrition datasets using international frameworks. I applied standardized labeling protocols (IPC) and produced validated datasets for policy use. My outputs informed national policy and funding decisions. • Applied international labeling frameworks • Labeled and scored humanitarian datasets • Produced peer-reviewed outputs from classified data • Supported national analysis and reporting

2021 - Present

Vitamin A Coverage Evaluation (PECS) — Data Annotation Consultant

OtherTextClassification
For the Vitamin A Coverage Evaluation (PECS), I designed data collection tools and processed annotated data. I analyzed coverage and classification of nutrition outcomes in the survey datasets. My role included ensuring labeling accuracy and protocol adherence. • Designed and tested annotation schemas • Led data processing and classification • Supported analysis of public health datasets • Reviewed labeling for accuracy and consistency

For the Vitamin A Coverage Evaluation (PECS), I designed data collection tools and processed annotated data. I analyzed coverage and classification of nutrition outcomes in the survey datasets. My role included ensuring labeling accuracy and protocol adherence. • Designed and tested annotation schemas • Led data processing and classification • Supported analysis of public health datasets • Reviewed labeling for accuracy and consistency

2025 - 2025

Food Security Survey, Grand South/East Madagascar — Data Annotation Lead

OtherTextClassification
In the Food Security Survey for WFP/FAO, I developed survey tools, managed sampling, and led data cleaning and analysis for labeled field survey data. I handled structured data annotation and implemented quality-control processes. My deliverables were comprehensive reports based on classified nutrition and food security outcomes. • Created data labeling guidelines for field surveys • Led annotation of food security indicators • Conducted quality-control over labeled datasets • Analyzed and synthesized results for reporting

In the Food Security Survey for WFP/FAO, I developed survey tools, managed sampling, and led data cleaning and analysis for labeled field survey data. I handled structured data annotation and implemented quality-control processes. My deliverables were comprehensive reports based on classified nutrition and food security outcomes. • Created data labeling guidelines for field surveys • Led annotation of food security indicators • Conducted quality-control over labeled datasets • Analyzed and synthesized results for reporting

2025 - 2025

Post Distribution Monitoring, Emergency Agricultural Assistance — Data Annotation Specialist

OtherTextClassification
During the Post Distribution Monitoring for FAO Madagascar, I designed survey tools and provided training on annotation procedures. I led the cleaning and classification of labeled agricultural assistance data. My work focused on quality assurance for labeled field data in emergency contexts. • Developed annotation protocols for field surveys • Managed data cleaning and classification • Trained teams on labeling best practices • Provided quality control and reporting

During the Post Distribution Monitoring for FAO Madagascar, I designed survey tools and provided training on annotation procedures. I led the cleaning and classification of labeled agricultural assistance data. My work focused on quality assurance for labeled field data in emergency contexts. • Developed annotation protocols for field surveys • Managed data cleaning and classification • Trained teams on labeling best practices • Provided quality control and reporting

2024 - 2025

Education

A

African Institute for Mathematical Sciences

Master of Science, Mathematics

Master of Science
2025 - 2026
N

National School of Statistics and Applied Economics (ENSEA)

Engineer in Statistics, Statistics and Applied Economics

Engineer in Statistics
2017 - 2019

Work History

I

IPC Technical Working Group

IPC Level I Analyst

Antananarivo
2021 - Present
I

IFRC

Planning, Monitoring, Evaluation & Reporting Officer

Antananarivo
2024 - 2025