Role

Statistician

Designs studies and analyzes data to draw trustworthy conclusions.

12 chaptersAbout 3 months15–30 min a day11 skills2 projects
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Chapter 1 is free. No card needed.

Day 1 on the Statistician path.

What a Statistician does

Designs studies and analyzes data for teams like health, government, and business to make reliable decisions and predictions.

  • Design surveys and experiments to answer real-world questions
  • Choose sampling methods and calculate needed sample sizes
  • Clean and validate data to reduce errors and bias
  • Analyze data using statistical models and hypothesis tests
  • Build forecasts and quantify uncertainty with confidence intervals
  • Create clear charts and reports that explain results and limits
  • Review methods to ensure results are reproducible and ethical

A day in the life

  1. Meet with stakeholders to clarify the question and success criteria
  2. Write analysis plan, pull data, and run checks for quality issues
  3. Model results in R or Python and test assumptions
  4. Review findings with teammates and refine based on feedback
  5. Document methods and share a short report or presentation

Tools you will use

Statistical computing: R, PythonSpreadsheets: Excel, Google SheetsDatabases: SQLVisualization: Tableau, Power BINotebooks: JupyterVersion control: Git

Your plan

Chapter by chapter.

1~1 wk

See what statistician work involves

StartFree
2~1 wk

Statistical methods and modeling

Skills
31–2 wks

Make small-n market research study: design, run, analyse, report

Proof
4~1 wk

Meet people who do statistician work

People
5~1 wk

Data prep and coding

Skills
6~1 wk

Analytical thinking

Skills
7~1 wk

Collaboration and communication

Skills
8~1 wk

Responsible data use

Skills
91–2 wks

Make public dataset deep-dive with a one-page insight memo

Proof
10~1 wk

Practise role interviews

Interview
11~1 wk

Choose a route into statistician work

Decide
12on your timeline

Apply for roles

Apply

By the last chapter

This is what you can show.

Things you've made

Small-n market research study: design, run, analyse, report and Public dataset deep-dive with a one-page insight memo

Skills you can prove

11 skills, each rated on work you actually did.

People you've talked to

3 people who do the job, with a message ready for each.

Questions you can answer

20 interview questions and a mock interview, with feedback.

Credentials

3 credentials compared, so you can pick one, or decide you don't need one. None is required.

Ways in

There is more than one route.

Ways to study

  • Bachelors degree in statistics, mathematics, economics, or a related field
  • Masters degree in statistics, biostatistics, or applied data science
  • Short courses in probability, inference, and regression plus a strong project portfolio

How people get their first job

  • Apply for statistics or analytics internships in research, health, or government
  • Start in data analyst roles and take on study design and testing tasks
  • Join a university research lab as a data or methods assistant
  • Build a portfolio with reproducible analyses and clear write-ups
  • Earn a practical certificate in applied statistics or data analysis

Life skills on this path: Networking · Job interviews · Job search

How the work is changing

What AI is doing to this role

How AI is changing this role · one of 6 tasks we track

Build regression and Bayesian models

Sped up a lot

What AI does

AI coding copilots write R and Python model code from plain-language prompts.

Still yours

You check assumptions, validate outputs, and defend every modelling choice.

Reviewed September 2026

In the app · Premium

The rest is in the app

  • How AI affects the other 5 tasks
  • Whether this job is growing or shrinking
  • How hard the first job is to get
  • Similar roles that are easier to get into
  • Updated every month, with sources
See it in the app →

How we rate a job →

Already working

Already a Statistician?

Plan your move to Senior Statistician: 10 chapters that end with a strong case for your next review.

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Questions

Questions about this path

How long does it take to become a statistician with Welica?

The path is 12 chapters, 3 months at 15 to 30 minutes a day. You can go faster or slower; the plan moves with you.

Do I need a degree?

Not always. Common routes are bachelors degree in statistics, mathematics, economics, or a related field, masters degree in statistics, biostatistics, or applied data science, or short courses in probability, inference, and regression plus a strong project portfolio.

What is free?

Chapter 1, See what statistician work involves, is free for good. Premium unlocks the rest of the path.

Start the Statistician path.

Chapter 1 free. About 15 to 30 minutes a day.

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