Lisa Chen – Medium

Lisa Chen

Lisa Chen
in
Towards Data Science

Using SQL to calculate trends based on historical status

Time series analysis is driven by activity timestamps. How can we capture trends in things that were present, but had no activity?

Aug 9, 2022

Using SQL to calculate trends based on historical status

Aug 9, 2022

Lisa Chen
in
Towards Data Science

Sybill Trelawney and the Confidence Interval Conundrum

In which we learn what confidence intervals are, why we use them, how to calculate them, and help Dumbledore with performance reviews.

Aug 4, 2020

Sybill Trelawney and the Confidence Interval Conundrum

Aug 4, 2020

Lisa Chen
in
Towards Data Science

Explaining Linear Regression to Michael Scott

Explaining how to calculate and interpret linear regression and r-squared like we are 8(ish).

Jul 12, 2020

Explaining Linear Regression to Michael Scott

Jul 12, 2020

Lisa Chen
in
Towards Data Science

How to Interpret and Calculate “X Times More Likely” Statistics

Walk through of how to calculate and use odds likelihood ratios, while avoiding sensationalism or misreporting.

Jul 8, 2020

How to Interpret and Calculate “X Times More Likely” Statistics

Jul 8, 2020

Lisa Chen
in
Towards Data Science

How to Test for Statistically Significant Relationships Between Categorical Variables with Chi…

Tutorial for chi-square and post hoc testing in Python to understand statistically significant relationships between categorical variables.

Jul 1, 2020

How to Test for Statistically Significant Relationships Between Categorical Variables with Chi…

Jul 1, 2020

Lisa Chen
in
The Startup

Willy Wonka and the Data Driven Chocolate Factory

There is a group of chocolate aficionados in New York called the Manhattan Chocolate Society. They get together every so often to taste…

Jun 22, 2020

Willy Wonka and the Data Driven Chocolate Factory

Jun 22, 2020

Lisa Chen

Data Diaries: a Month in the Life of a Baker turned Management Consultant

One of the top 5 times I’ve been most proud to call someone my friend happened in October of 2018, when one of my friends — lets call her…

Jun 6, 2020

Data Diaries: a Month in the Life of a Baker turned Management Consultant

Jun 6, 2020

Lisa Chen
in
Towards Data Science

Lose-the Vuitton: Do People Still Care About Luxury Goods During a Global Pandemic?

With the help of Google Trends data and some creative search queries, I plan to find out.

May 28, 2020

Lose-the Vuitton: Do People Still Care About Luxury Goods During a Global Pandemic?

May 28, 2020

Lisa Chen
in
The Startup

Data for Humans: Visualizing Permanent Small Business Closures in Toronto from March — May

This visualization was difficult in both execution and subject matter. It was partially inspired by a conversion I had with my friend who…

May 24, 2020

Data for Humans: Visualizing Permanent Small Business Closures in Toronto from March — May

May 24, 2020

Lisa Chen
in
Towards Data Science

Data Visualization for Humans: How I Turned my Data into Watercolour Art

Have you ever listened to a stranger talk and felt like somehow, they were expressing thoughts you didn’t even know you had? Or had, but…

May 13, 2020

Data Visualization for Humans: How I Turned my Data into Watercolour Art

May 13, 2020

Lisa Chen

Lisa Chen

Dim sum and data connoisseur. Drinks my coffee black and orders Chatime bubble tea with 0% sugar. Find me on LinkedIn! https://www.linkedin.com/in/lisa-chen-655

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