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Nnedimma Vivian Offiah

Nnedimma Vivian Offiah

Data Analyst

Nigeria flagEnugu, Nigeria
$10.00/hrEntry LevelOther

Key Skills

Software

Other

Top Subject Matter

General business analytics
Business analytics
Data science training

Top Data Types

TextText
DocumentDocument

Top Task Types

Data CollectionData Collection
Question AnsweringQuestion Answering

Freelancer Overview

Data Analyst with series of experience, proficient in harnessing data insights to propel strategic decision-making and enhance business growth. Expertise in data cleaning, visualization, and statistical analysis, complemented by strong skills in critical thinking and problem-solving.

Entry LevelEnglishIgbo

Labeling Experience

Data Analyst

OtherTextData Collection
Engaged in rigorous data cleaning and preprocessing within a training environment to simulate industry data labeling workflows. Enhanced the structure and usability of datasets primarily for analytic and machine learning tasks. Applied spreadsheet tools and BI software to label and visualize business data. • Addressed inconsistencies and gaps in textual and tabular data sources. • Standardized data structures to enable efficient model training and analysis. • Used Excel, Google Sheets, and BI tools for annotation and visualization. • Produced dashboards with Tableau and Power BI that highlighted data trends.

Engaged in rigorous data cleaning and preprocessing within a training environment to simulate industry data labeling workflows. Enhanced the structure and usability of datasets primarily for analytic and machine learning tasks. Applied spreadsheet tools and BI software to label and visualize business data. • Addressed inconsistencies and gaps in textual and tabular data sources. • Standardized data structures to enable efficient model training and analysis. • Used Excel, Google Sheets, and BI tools for annotation and visualization. • Produced dashboards with Tableau and Power BI that highlighted data trends.

2025 - 2026

Data Analyst Intern

OtherTextData Collection
Responsible for cleaning and preprocessing large datasets for downstream machine learning analysis and dashboard builds. Labeled and structured textual and tabular data to facilitate data quality and insights. Utilized spreadsheet and visualization software to create comprehensible datasets for analytical use. • Removed inconsistencies and missing values from text-based records. • Developed organized data formats for improved data wrangling and machine learning utility. • Employed Excel and Google Sheets for labeling and analysis tasks. • Built interactive visualizations using Tableau and Power BI to communicate key findings.

Responsible for cleaning and preprocessing large datasets for downstream machine learning analysis and dashboard builds. Labeled and structured textual and tabular data to facilitate data quality and insights. Utilized spreadsheet and visualization software to create comprehensible datasets for analytical use. • Removed inconsistencies and missing values from text-based records. • Developed organized data formats for improved data wrangling and machine learning utility. • Employed Excel and Google Sheets for labeling and analysis tasks. • Built interactive visualizations using Tableau and Power BI to communicate key findings.

2024 - 2024

Education

E

Enugu State University of Science and Technology Agbani

Bachelor of Science, Psychology

Bachelor of Science
2017 - 2021
S

St Mary's Mission Secondary School Owelli

Senior School Certificate, General Secondary Education

Senior School Certificate
2009 - 2014

Work History

E

Enugu SME Center

Data Analyst

Enugu
2025 - Present
G

Genesys Tech Hub

Data Analysis Trainee

Enugu
2024 - 2024