Google Data Analytics Professional Certificate Google Data Analytics Capstone: Complete a Case Study Syllabus

What is the difference between a portfolio and a case study?

A portfolio is the overall collection or website showcasing your work and skills; a case study is one individual project within it — a documented analysis of a specific business problem from question to recommendation.

Name at least four qualities that make a data analytics portfolio strong.

It reflects your own original work (not copied), tells a clear story of your process, showcases end-to-end skills (cleaning through visualization), is easy to navigate, uses real datasets, and is tailored to the roles or industry you are targeting.

Why should you avoid including proprietary or confidential data from past employers in your portfolio?

Sharing company data can violate privacy laws, non-disclosure agreements, and data ethics; portfolios should only use public, open, or properly licensed datasets.

Besides case studies, what other elements are commonly included in a data analyst's portfolio or personal site?

A short biography or 'About me' section, contact information, resume, links to code repositories, descriptions of tools and skills, and any blog posts or presentations.

Why is documenting your data-cleaning process a critical part of the capstone?

Documentation creates a record of every change so the analysis is transparent, reproducible, and verifiable — it lets others (and future you) understand what was done, recover from errors, and trust the results.

What is a changelog in the context of a data analysis project?

A chronological file that lists every change made to the data or project — what was changed, when, why, and by whom — typically organized by version.

What details should be recorded when documenting each data-cleaning step?

The specific operation performed (e.g., removed duplicates, standardized formats), the tool or query used, the reason for the change, and the effect on the data (e.g., number of rows removed).

How does thorough documentation help you during a job interview?

It lets you walk interviewers step-by-step through your reasoning — why you chose certain tools, how you handled dirty data, and how you reached conclusions — demonstrating structured thinking, not just final results.

What are common platforms for hosting a data analytics portfolio or project online?

GitHub (code and notebooks), Kaggle (notebooks and datasets), Tableau Public (interactive dashboards), personal websites (e.g., Wix, Squarespace, WordPress, Google Sites), and blogging platforms like Medium.

What is Kaggle and how is it useful for the capstone?

Kaggle is an online data science community offering free public datasets, cloud-hosted notebooks, and competitions; capstone learners can source data there and publish their analysis notebooks for others to view.

Why is GitHub a popular hosting choice for data analytics case studies?

It provides free public repositories with version control, renders R Markdown/Jupyter notebooks and README files, shows commit history that evidences your process, and is widely recognized by technical recruiters.

What is Tableau Public best suited for in a portfolio?

Hosting and sharing interactive data visualizations and dashboards publicly, letting employers explore your charts rather than viewing static images.

When presenting case study results, why should you tailor the presentation to your audience?

Different stakeholders have different technical levels and interests — executives want business impact and recommendations, while technical peers may want methodology — so framing, detail level, and vocabulary should match the audience.

What are key characteristics of an effective data visualization for sharing findings?

It highlights the key insight clearly, uses appropriate chart types for the data, has labeled axes, titles, and legends, avoids clutter and misleading scales, and is accessible (e.g., colorblind-friendly palettes, alt text).

What structure should a case study presentation generally follow?

A narrative arc: the business problem (Ask), the data and its preparation (Prepare/Process), the analysis and key insights (Analyze), supporting visuals (Share), and conclusions with actionable recommendations (Act).

Why are recommendations considered the most important ending of a case study presentation?

Stakeholders ultimately need to know what to do; recommendations translate insights into concrete actions, showing the analysis creates business value — the capstone specifically asks for your top three recommendations.

What is data storytelling?

Communicating the meaning of a dataset by combining three elements — data, narrative, and visuals — into an engaging story that gives the audience context, highlights key insights, and drives them toward action.

What are the three core elements of an effective data story?

Engagement (capturing the audience's attention and making it relevant to them), dimension (showing the different aspects and context of the data), and actionable insight (findings the audience can act on).

How do you tell your data story to employers when discussing your capstone?

Frame it as a narrative: the business problem you tackled, the obstacles in the data and how you solved them, the insights you discovered, and the recommendations you made — emphasizing your decision-making at each step.

Why should you practice a short verbal walkthrough (an 'elevator pitch') of your case study?

Interviews often include 'tell me about a project' questions; a rehearsed, concise summary of the problem, process, and impact shows communication skill and makes your work memorable.

What is the recommended overall roadmap for completing the capstone case study?

Choose a track or your own dataset, then work through the six phases in order — Ask, Prepare, Process, Analyze, Share, Act — completing the guided deliverables for each phase, then publish the finished case study to your portfolio.

Which tools taught in the certificate can be used to complete the capstone analysis?

Spreadsheets (Google Sheets or Excel) for smaller datasets, SQL (e.g., BigQuery) for querying larger data, R (RStudio/Posit) for statistical analysis and visualization, and Tableau for dashboards — you choose the tools that fit your data.

What should you do if your chosen capstone dataset is too large for a spreadsheet?

Move to a more scalable tool: load it into a SQL database (such as BigQuery) or use R, since spreadsheets slow down or fail with very large row counts.

Roughly how many key questions guide the case study within each analysis phase in the capstone packet?

Each phase of the case study packet provides guiding questions and a checklist of key tasks (for example, 'What is the problem you are trying to solve?' in Ask), plus a defined deliverable to produce before moving to the next phase.

What are common elements of an effective data analyst resume highlighted in the capstone course?

A one-page format with contact information, a summary or objective, a skills section listing tools (SQL, R, spreadsheets, Tableau), work experience described with accomplishment-focused, quantified bullet points, and transferable skills for career changers.

What is the PACE-style advice for answering behavioral interview questions, i.e., the STAR method?

Structure answers as Situation (the context), Task (your responsibility), Action (what you specifically did), and Result (the measurable outcome) — keeping stories concise and relevant to the question.

What types of questions should a candidate expect in a data analyst interview?

Behavioral questions (teamwork, challenges), technical questions (SQL queries, spreadsheet functions, statistics), scenario/case questions about how you would approach an analysis, and questions walking through portfolio projects.

Why is asking your own questions at the end of an interview important?

Thoughtful questions about the team, data culture, tools, and success metrics show genuine interest and preparation, and help you evaluate whether the role fits you.

What is a personal brand and why does it matter in a data analytics job search?

A personal brand is your reputation and public image — the consistent story your resume, portfolio, online profiles, and interactions tell about your skills and values; a strong brand differentiates you and attracts opportunities.

What networking practices does the capstone course recommend for aspiring data analysts?

Build a complete LinkedIn profile (photo, headline, summary, project links), connect and engage with data professionals, join online communities (Kaggle, Tableau forums, Twitter/X data community), attend meetups and conferences, seek mentors, and ask for informational interviews and referrals.