Sample Size

Unknown author · Tools

Open in Chrome Web Store

Users

Avg rating

5.0

Ratings

Updated

Mar 13, 2025

Media

1 item

Description

Sample Size Calculator for A/B Testing Sample Size is designed to help you quickly calculate and chart the required sample size for your A/B tests. By inputting key metrics like baseline conversion rate, minimum detectable effect, statistical power, and significance level, this tool provides you with an accurate estimate of the number of subjects needed per variation to achieve statistically significant results. Developed by Amanda Treutler with the help of Evan Miller

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
11
Description length
Characters in the listing description.
475
Media assets
Screenshots and videos on the listing.
1
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
44.3

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.