3.7.1 Confidence Interval for Mean of One group.3.5.2 Type I Error & All Pairwise Tests.3.4.2 More about the normal distribution and two group comparisons.3.2.1 Where did the data come from? Valid tests & Assumptions.3 Comparing Groups and Hypothesis Testing.2.5.3 Comparing multiple groups with density curves.2.5.1 Histogram as estimate of a density. ![]() 2.4.3 Normal Distribution and Central Limit Theorem.2.3.4 Examples of Continuous Distributions.2.3.3 Probability Density Functions (pdfs).2.3.2 Cummulative Distribution Function (cdfs).2.3.1 Probability with Continuous distributions.2.2.3 Conditional Probability and Independence.2.2.2 More Examples of Probability Distributions.2.2.1 Definition of a Probability Distribution.The effort a potential volunteer needs to expend to be able toĬontribute a new test environment to the project. The buildslavesĪre designed to require an absolute minimum of configuration, reducing Only available when provided by interested volunteers. The current version of the Buildbot is additionally targeted atĭistributed free-software projects, where resources and platforms are Unit tests thatĪren't run on a regular basis tend to suffer from bitrot just likeĬode does: exercising them on a regular basis helps to keep them When everyone can see the status of the project, developers areĮncouraged to keep the tree in good working order. In general, having more visibility into the project is always good,Īnd automation makes it easier for developers to do the right thing. Run: having the buildbot run them reduces the developer's workload to Many developersĬomplained that the unit tests were inconvenient or took too long to The library changes haven't broken anything. The codebase helps here: if an application's unit tests pass despiteĬhanges in the libraries it uses, you can have more confidence that Other code was (unfortunately) depending upon. Library without warning its users, or change internal aspects that With multiple platforms it was difficult for developers toĭo the right thing (compile their potential change on all platforms) Īnother problem was when programmers would change the behavior of a Updating a tree, compiling (and discovering the breakage), finding theĭeveloper at fault, and complaining to them about the problem they had Written to automate the human process of walking into the office, Would compile for some developers but not others. Use string.h, some prefer strings.h), and then the tree Time, incompatibilities would sneak in (some unix platforms want to Preferences and tended to stick to a single platform. Unix (linux, solaris, BSD), but individual developers had their own Of the project were supposed to compile and run on several flavors of Team writing a cross-platform embedded system. ![]() The Buildbot was inspired by a similar project built for a development Up: Introduction 1.1 History and Philosophy
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