HEATKEYS

A free online t-test calculator. Statsisitcs calculator computes p values for 1-tailed or 2-tailed t-tests. Performs the t-test for groups with equal variance, unequal variance, and matched groups (paired groups).

GraphPad Prism is a powerful combination of biostatistics, curve fitting (nonlinear regression) and scientific graphing in one comprehensive program. Easily organize, analyze and graph repeated experiments; pick appropriate statistical tests and inte...

URLpulse has a database containing data for hundreds of thousands of US websites. Utilizing our specialized algorithms we make it easy for you to analyse & compare results for any website in the US domain space.

Offers bookmark synchronization, search enhancement and web discovery based on sites bookmarked by users.

Online tools and calculators for biology, bioinformatics, statistics, and medical statistics.

DanielSoper.com - The homepage of Daniel Soper

SimilarWeb offers an improved method of navigating the internet as a complementary product that will assist users and improve their internet surfing experience by helping them find similar websites and related content.

Easily find more sites like those you like. Similar Sites helps you find related sites and alternatives based on community recommendations and computer analysis.

TrafficEstimate.com profiles millions of websites providing traffic statistics, web analytics, keyword and competitor analysis, contact information, and more.

Alexa provides information about websites including Top Sites, Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Information and Search Analytics for SEM and SEO optimization. The Alexa Toolbar is a browser add-on that shows d...