PhD

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How would you explain covariance to someone who understands only the mean?

variance covariance intuition teaching asked Nov 7, 2011 at 19:41

stats.stackexchange.com

258 votes

What is the enlightenment I'm supposed to attain after studying finite automata?

fl.formal-languages automata-theory big-picture teaching dfa asked Dec 23, 2012 at 4:02

cstheory.stackexchange.com

238 votes

When (and why) should you take the log of a distribution (of numbers)?

distributions data-transformation logarithm asked Nov 23, 2011 at 20:41

stats.stackexchange.com

223 votes

Which "mean" to use and when?

mean geometric-mean types-of-averages harmonic-mean asked Feb 19, 2012 at 19:43

stats.stackexchange.com

140 votes

How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?

css margin asked Jul 15, 2012 at 20:06

stackoverflow.com

104 votes

Understanding "variance" intuitively

distributions variance standard-deviation inference intuition asked Oct 25, 2011 at 21:28

stats.stackexchange.com

94 votes

What is the contribution of lambda calculus to the field of theory of computation?

soft-question big-picture lambda-calculus ho.history-overview asked Mar 23, 2014 at 19:20

cstheory.stackexchange.com

89 votes

Do groups, rings and fields have practical applications in CS? If so, what are some?

group-theory ring-theory soft-question field-theory big-picture asked Jul 21, 2013 at 22:10

math.stackexchange.com

88 votes

"Where" exactly are complex numbers used "in the real world"?

complex-analysis soft-question complex-numbers big-list big-picture asked Jan 24, 2013 at 2:39

math.stackexchange.com

85 votes

How exactly did statisticians agree to using (n-1) as the unbiased estimator for population variance without simulation?

variance unbiased-estimator proof history asked May 26, 2014 at 0:09

stats.stackexchange.com

Top Answers

What is the difference between exponential and geometric distribution?

stats.stackexchange.com

Secure Access to Authenticated REST Server through Backbone.js?

stackoverflow.com

Why would teams use the Fibonacci sequence for story points?

pm.stackexchange.com

How to detect cheating when students take online quizzes or exams from home?

academia.stackexchange.com

Very peculiar :HTTP Status 405 - Method Not Allowed

stackoverflow.com

How would you explain covariance to someone who understands only the mean?

stats.stackexchange.com

Should cookies be used in a RESTful API?

softwareengineering.stackexchange.com

What are the downfalls of MVC?

softwareengineering.stackexchange.com

How to enforce 'sessions' in RESTful web services using RESTlet?

stackoverflow.com

Diagram of how Backbone.js works?

stackoverflow.com

Communications regarding maintainability of code

softwareengineering.stackexchange.com

What exactly is building a statistical model?

stats.stackexchange.com

Reading PDFs on Kindle device

ebooks.stackexchange.com

The cost of longer delay between development and QA

softwareengineering.stackexchange.com

Proof of equivalence of algebraic and geometric dot product?

math.stackexchange.com

How can one successfully run a reading group?

academia.stackexchange.com

How to make better code reviews when pull requests are large?

softwareengineering.stackexchange.com

"How" to save an entire collection in Backbone.js - Backbone.sync or jQuery.ajax?

stackoverflow.com

How to concatenate two array objects using jquery without adding duplicates

stackoverflow.com

Using JOIN keyword or not

softwareengineering.stackexchange.com

Differences between HTML templating systems

softwareengineering.stackexchange.com

How to justify code refactoring time?

softwareengineering.stackexchange.com

Sophisticated treatments of topics in school mathematics

mathoverflow.net

Max-height relative to parent doesn't work

stackoverflow.com

Why do we use story points instead of man days when estimating user stories?

softwareengineering.stackexchange.com

Is it possible to work on extra activities (start-up project) during PhD?

academia.stackexchange.com

Using Freemarker with Restlet 2.0 in a Java EE server

stackoverflow.com

Alternatives for Google Reader (with Android synchronizing)

webapps.stackexchange.com

How can I represent a range in Java?

stackoverflow.com

Why does order matter when catching exceptions?

stackoverflow.com