Katie Marriner
Data journalist, designer and developer
My goal to inform and empower audiences through clear, engaging visuals and interactive presentations. I am driven by the belief that open access to information is essential for an informed public. This principle guides my approach to developing visuals and tools that uphold the highest standards of accuracy and journalistic ethics.
- Bluesky | Github | Linkedin | Resume
The 8 Types Of Democrats And Republicans In The House
D3.js
I led the design and development of FiveThirtyEight's "Quiet Caucuses" interactive, showing how each representative's caucus affiliation compares to their voting behavior. The visualization was based on an analysis of House votes from 2023.
Who Is Favored To Win The 2024 Presidential Election?
D3.js
I led the design of FiveThirtyEight's 2024 election forecast and helped develop the frontend, visualizing polling uncertainty and highlighting the significance of seven swing states.
Where should I retire?
Vue.js, D3-geo (command-line interface), Excel
The idea for this quiz came from a hackathon. Census data, among other data that characterizes a location, is used to find metropolitan areas that match your needs and wants in retirement.
The rising cost of childcare is making life impossible for parents. Use our calculator to track the expense where you live.
D3.js, Svelte, Python, Pandas
Using the National Database of Childcare Prices, I created a tool for readers to search for childcare prices by county and see how that compares to their income and the median income of that county.
Economic indicator breakdown series
Svelte, D3.js, GitHub Actions, Python
A series of interactives where I breakdown and visualize top-line economic indicators and make its components searchable.
- Florida has the highest inflation in the U.S. Here are some other hot spots.
- The U.S. economy added 209,000 jobs in June. Use our interactive to see a breakdown of these numbers by industry
- Search for the latest PCE inflation trends of almost 400 items
- Search for the latest CPI inflation trends of almost 200 items
- Use MarketWatch's tool to search for the producer price index of almost 600 products
MarketWatch Metrics
A column where I regularly take a deep dive into one data point that is meaningful to the financial world and your money. There are so many metrics that can help us make informed financial decisions. I explain how they are derived and what we can learn from them.
- This little-known metric tells you how a mortgage-rate move impacts your ability to buy a home
- The metric that shows why the world's three biggest economies could be in serious trouble
- Confused about what's causing inflation? This metric shows what's driving the price rise.
- India is now the world's most populous country. But this demographic metric is more important for its economy.
Potential homebuyers may start to feel some relief: Use our interactive to see how housing inventory changed in your county.
D3.js, Svelte, Python, GitHub Actions
I analyzed data on total listings of single-family homes collected by Realtor.com to organize and present data in a personalized way.
This is how America's booming demand for goods shattered the supply chain.
D3.js, Vue, Google Sheets
By collecting data from each of the nine largest container ports in the U.S., I created a unique dataset that tells the story of how the supply chain is being affected by the changing economy, particularly from the increased demand for goods.
These public pension systems used to have too much money. Now they're in crisis. What happened?
D3.js, Vue, Google Sheets
I analyzed data from over 200 public pension systems, identified outliers in funding ratios and put these data points into context of market conditions and legislation.
The K-shaped Recovery: The coronavirus pandemic has remade our working lives, and it's been anything but fair.
D3.js, Vue, Google Sheets
ICOs continue to raise money via SEC back door
Python/BeautifulSoup
I searched the SEC's EDGAR database using Python and BeautifulSoup to find mentions of crypto-related words in Form D filings with the SEC, which is where some companies are initiating ICOs
What S&P 500 CEOs spent on midterms
Python/pandas, Excel, OpenRefine, Vue.js
Looking at FEC data, I identified CEOs of S&P 500 companies for the 2018 reporting cycle using Python to fetch and format the data, OpenRefine to standardize last names and employers and Excel to analyze the data. I built the interactive with Vue.js.
Beat the Fed
Python, D3.js, JavaScript
I wrote a script that calculated the make-up of PCE inflation and could be run every month after the Commerce Department's release of the figures. I also contributed to the frontend design and development of the tool.
Search Hillary Clinton's emails
Bootstrap Tables, Handlebars.js
The State Department released Hillary Clinton's emails from the time when she was secretary of state on a monthly schedule. I implemented Bootstrap Tables and server-side pagination to improve load time. Features include the ability to search by certain senders/recipients and popular search terms to guide users on what to search for.