Stat-Talk #8

Stat-Talk #8

Dealing with High Variance Metrics

Dealing with High Variance Metrics

Dealing with High Variance Metrics

Boosting the Power of Your Tests

Boosting the Power of Your Tests

Boosting the Power of Your Tests

Understand Variance. Remove Outliers. Reduce Sample Size.

Understand Variance. Remove Outliers. Reduce Sample Size.

45 mins + 15 mins QnA

Topics

checkSeparately study the uplift on conversion rate and average order value.
checkUnderstand what CUPED is and how it can help you save visitors.
checkLearn how to create low-variance proxies for your metrics.
checkReplace the outliers in your data and boost the power of your tests.

Audience

This talk is for you if:

checkYou are running tests with continuous metrics like revenue per visitor.
checkYou are struggling to get significance because of large outliers.
checkDon't know what variance is and why you should care about it.
checkHave heard a lot about CUPED but don't know what it is.

After this talk, you will understand why some metrics have high variance and what to do about them.

Meet Your Mentor

Meet Your Mentor

Ishan Goel

Ishan Goel

Built the Stats Engine at VWO

Built the Stats Engine at VWO

Founder & Educator

Former Head of Data Science

Author

Trained 60 Leaders

Founder & Educator

Former Head of Data Science

Author

Trained 60 Leaders

Hi! I am a statistician, a teacher and the founder of Thinking Bell.

I am known for simplifying experimentation with analogies, doodles, and games that make decisions sharper and science practical.

I have led data science research at VWO and I have authored the VWO Stats Blog. In 2025, I taught a statistics bootcamp for a team of 60 marketers, product managers and data scientists.

Join me to master experimentation with clarity, depth, and fun.

Stat-Talk #8

Dealing with High Variance Metrics

Boosting the Power of Your Tests

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