

live cohort COURSE
Master the Stats of A/B Testing
Lead Experiments with Clarity
Master the Stats of A/B Testing
Lead Experiments with Clarity
See through the fog of fluctuating results, false winners and hard-to-prove insights.
See through the fog of fluctuating results, false winners and hard-to-prove insights.
Choose the right metrics. Set the right sample size. Know when to stop your test.
Choose the right metrics. Set the right sample size. Know when to stop your test.
Jan 14th - Jan 25th, 2026
10:00 AM - 12:00 PM EST



live cohort COURSE
Master the Stats of A/B Testing
Lead Experiments with Clarity
See through the fog of fluctuating results, false winners and hard-to-prove insights.
Choose the right metrics. Set the right sample size. Know when to stop your test.
Jan 14th - Jan 25th, 2026
10:00 AM - 12:00 PM EST




live cohort course
Master the Stats of A/B Testing,
Lead Experiments With Clarity
$960.00
$1199.00
20% Early-Bird Discount
Course Highlights
Course Highlights
Course Highlights
classes
5 x 2-Hour Live Classes
question and answer
1 Hour QnA Session
One-on-One Focus
30 Student Cohort
Peer Interaction
Breakout Room Puzzles
Post-class revision
Get Detailed PDF Notes

Dedicated guidance
30-Minute One On One
risk-free investment
100% Money-Back
lifetime access
Alumini Meets
classes
5 x 2-Hour Live Classes
question and answer
1 Hour QnA Session
One-on-One Focus
30 Student Cohort
Peer Interaction
Breakout Room Puzzles
Post-class revision
Get Detailed PDF Notes

Dedicated guidance
30-Minute One On One
risk-free investment
100% Money-Back
lifetime access
Alumini Meets
classes
5 x 2-Hour Live Classes
question and answer
1 Hour QnA Session
One-on-One Focus
30 Student Cohort
Peer Interaction
Breakout Room Puzzles
Skills to Take Away
Skills to Take Away
Skills to Take Away
Choose the right metrics to run faster, conclusive and insightful tests.
Choose the right metrics to run faster, conclusive and insightful tests.
Choose the right metrics to run faster, conclusive and insightful tests.
Configure statistics to get trustworthy and highly powered test results.
Configure statistics to get trustworthy and highly powered test results.
Configure statistics to get trustworthy and highly powered test results.
Identify unreliable results and discern the underlying biases and errors.
Identify unreliable results and discern the underlying biases and errors.
Identify unreliable results and discern the underlying biases and errors.
Save visitors by using smart statistical strategies on low-traffic pages.
Save visitors by using smart statistical strategies on low-traffic pages.
Save visitors by using smart statistical strategies on low-traffic pages.
Dissect test data to extract meaningful insights from audience segments.
Dissect test data to extract meaningful insights from audience segments.
Dissect test data to extract meaningful insights from audience segments.
Guide the plan of action when test results are unexpected and inconclusive.
Guide the plan of action when test results are unexpected and inconclusive.
Guide the plan of action when test results are unexpected and inconclusive.
Mentor your team to think scientifically and innovate with trial and error.
Mentor your team to think scientifically and innovate with trial and error.
Mentor your team to think scientifically and innovate with trial and error.
Is This Course For You?
Is This Course For You?
Is This Course For You?
This course is for you if you have ever experienced:
The frustration of looking at fluctuating statistics that do not seem to converge.
The frustration of looking at fluctuating statistics that do not seem to converge.
The frustration of looking at fluctuating statistics that do not seem to converge.
The distress of not getting statistical significance on a logically promising idea.
The distress of not getting statistical significance on a logically promising idea.
The distress of not getting statistical significance on a logically promising idea.
The struggle of running experiments when visitor traffic is low.
The struggle of running experiments when visitor traffic is low.
The struggle of running experiments when visitor traffic is low.
The anxiety of not knowing when an A/B test winner is genuine or not.
The anxiety of not knowing when an A/B test winner is genuine or not.
The anxiety of not knowing when an A/B test winner is genuine or not.
The fatigue of convincing people when you have a finding contrary to popular belief.
The fatigue of convincing people when you have a finding contrary to popular belief.
The fatigue of convincing people when you have a finding contrary to popular belief.
This course teaches how to tackle these challenges with an intuitive understanding of randomness.
The Curriculum
The Curriculum
The Curriculum

Class-1
Seeing Clearly: Why A/B Testing is needed?
Wed, Jan 14th, 2026
10:00 AM - 12:00 PM EST
Start by understanding the problems with randomness and the various biases that cause data to show false patterns. Grasp why randomness cancels most of these biases and what makes A/B testing trustworthy.

Class-1
Seeing Clearly: Why A/B Testing is needed?
Wed, Jan 14th, 2026
10:00 AM - 12:00 PM EST
Start by understanding the problems with randomness and the various biases that cause data to show false patterns. Grasp why randomness cancels most of these biases and what makes A/B testing trustworthy.

Class-1
Seeing Clearly: Why A/B Testing is needed?
Wed, Jan 14th, 2026
10:00 AM - 12:00 PM EST
Start by understanding the problems with randomness and the various biases that cause data to show false patterns. Grasp why randomness cancels most of these biases and what makes A/B testing trustworthy.

Class-2
Truth, Noise and Priors: Decoding the Statistics of Significance
Fri, Jan 16th, 2026
10:00 AM - 12:00 PM EST
Grasp the intuition behind calculating statistical significance and the different kinds of errors it can have. Decipher why many of your winners might be false and robust decisions depend on what you know about the test.

Class-2
Truth, Noise and Priors: Decoding the Statistics of Significance
Fri, Jan 16th, 2026
10:00 AM - 12:00 PM EST
Grasp the intuition behind calculating statistical significance and the different kinds of errors it can have. Decipher why many of your winners might be false and robust decisions depend on what you know about the test.

Class-2
Truth, Noise and Priors: Decoding the Statistics of Significance
Fri, Jan 16th, 2026
10:00 AM - 12:00 PM EST
Grasp the intuition behind calculating statistical significance and the different kinds of errors it can have. Decipher why many of your winners might be false and robust decisions depend on what you know about the test.

Class-3
Creatively Designing Your Experiments For Maximum Insights
Mon, Jan 19th, 2026
10:00 AM - 12:00 PM EST
Learn to design tests with the right metrics, a suitable audience and the correct statistical configuration. In this class, you will learn all that you should do before starting an experiment to make it robust & insightful.

Class-3
Creatively Designing Your Experiments For Maximum Insights
Mon, Jan 19th, 2026
10:00 AM - 12:00 PM EST
Learn to design tests with the right metrics, a suitable audience and the correct statistical configuration. In this class, you will learn all that you should do before starting an experiment to make it robust & insightful.

Class-3
Creatively Designing Your Experiments For Maximum Insights
Mon, Jan 19th, 2026
10:00 AM - 12:00 PM EST
Learn to design tests with the right metrics, a suitable audience and the correct statistical configuration. In this class, you will learn all that you should do before starting an experiment to make it robust & insightful.

Class-4
Handling Data, Analysing Results and Making Decisions
Wed, Jan 21st, 2026
10:00 AM - 12:00 PM EST
Discover the different checks to run on data and the insights you can get by segmeing the data. In this class, you will learn to ask the right questions, make robust decisions and decide the next steps on a test.

Class-4
Handling Data, Analysing Results and Making Decisions
Wed, Jan 21st, 2026
10:00 AM - 12:00 PM EST
Discover the different checks to run on data and the insights you can get by segmeing the data. In this class, you will learn to ask the right questions, make robust decisions and decide the next steps on a test.

Class-4
Handling Data, Analysing Results and Making Decisions
Wed, Jan 21st, 2026
10:00 AM - 12:00 PM EST
Discover the different checks to run on data and the insights you can get by segmeing the data. In this class, you will learn to ask the right questions, make robust decisions and decide the next steps on a test.

Class-5
Understanding and Selecting the Right Metrics
Fri, Jan 24th, 2026
10:00 AM - 12:00 PM EST
Make sense of the different complexities of metrics and learn how they impact your test. In this class, you will observe various case studies and master the art of choosing the right metrics that lead you to success.

Class-5
Understanding and Selecting the Right Metrics
Fri, Jan 24th, 2026
10:00 AM - 12:00 PM EST
Make sense of the different complexities of metrics and learn how they impact your test. In this class, you will observe various case studies and master the art of choosing the right metrics that lead you to success.

Class-5
Understanding and Selecting the Right Metrics
Fri, Jan 24th, 2026
10:00 AM - 12:00 PM EST
Make sense of the different complexities of metrics and learn how they impact your test. In this class, you will observe various case studies and master the art of choosing the right metrics that lead you to success.

Bonus
Question & Answer
Sat, Jan 25th, 2026
10:00 AM - 11:00 AM EST
Make sense of the different complexities of metrics and learn how they impact your test. In this class, you will observe various case studies and master the art of choosing the right metrics that lead you to success.

Bonus
Question & Answer
Sat, Jan 25th, 2026
10:00 AM - 11:00 AM EST
Make sense of the different complexities of metrics and learn how they impact your test. In this class, you will observe various case studies and master the art of choosing the right metrics that lead you to success.

Bonus
Question & Answer
Sat, Jan 25th, 2026
10:00 AM - 11:00 AM EST
Make sense of the different complexities of metrics and learn how they impact your test. In this class, you will observe various case studies and master the art of choosing the right metrics that lead you to success.
Meet Your Mentor
Meet Your Mentor
Ishan Goel
Ishan Goel
Built the Stats Engine at VWO
Built the Stats Engine at VWO



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 now I am preparing a training for 60 leaders at The Economist. I have authored the VWO Stats Blog and have delivered 15+ talks for experimenters.
Join me to master experimentation with clarity, depth, and fun.
Frequently Asked Questions
Frequently Asked Questions
Frequently Asked Questions
How can I remember all that has been taught in the course?
Will I get to interact with other students in the course?
Are there any assignments or tests that I need do outside class time?
Will there be breaks in the class?
What time are the classes for my time zone?
How can I remember all that has been taught in the course?
Will I get to interact with other students in the course?
Are there any assignments or tests that I need do outside class time?
Will there be breaks in the class?
What time are the classes for my time zone?
How can I remember all that has been taught in the course?
Will I get to interact with other students in the course?
Are there any assignments or tests that I need do outside class time?
Will there be breaks in the class?
What time are the classes for my time zone?
Still have questions?
Still have questions?
Stop Guessing With Data
Make Statistically Sound Decisions
Join the 30-student cohort and master A/B testing stats through live classes, games, and community.
Stop Guessing With Data
Make Statistically Sound Decisions
Join the 30-student cohort and master A/B testing stats through live classes, games, and community.
Stop Guessing With Data
Make Statistically Sound Decisions
Join the 30-student cohort and master A/B testing stats through live classes, games, and community.


