In simple terms, one-tailed (or one-sided) tests will only tell you if control is equal to the variant or not. If control is not equal to the variant it could mean that control is better than the variant or vice versa. Two-tailed (or two-sided) tests also identify if control is different to the variant, with […]

What is a sample size calculator? A sample size calculator provides a visible method of computing the number of visitors required for a test to be statistically significant (e.g. the needed amount of visitors you need to assess that a lift/loss of x% can be trusted with 95% confidence).

What is an hypothesis? The definition states an hypothesis to be a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. For conversion rate optimisation this is derived from collected data and forms the foundation of why changes are made. They are based on deduction and […]

What is an SDK? A software developer’s kit (SDK) is a set of programs used by a computer programmer to write application programs. Typically, an SDK includes a visual screen builder, an editor, a compiler, a linker, and sometimes other facilities.

What is Swift? Swift is a general-purpose, multi-paradigm, compiled programming language developed by Apple Inc. for iOS, macOS, watchOS, tvOS, and Linux. Swift is designed to work with Apple’s Cocoa and Cocoa Touch frameworks and the large body of existing Objective-C (ObjC) code written for Apple products.

What is the conversion rate? The conversion rate is the number of conversions divided by the total number of visitors. So if a website receives 500 visitors in a month and has 100 sales, the conversion rate would be 100 divided by 500. This evaluates to 20%.

What is website usability? Website usability is a term describing the ease of use of a particular website or project. This area addresses a number of big concerns for today’s producers and developers related to how a target audience uses an online site.

What is a return code? A HTTP server return code that identifies the success, failure, and other characteristics of a transfer of data from a server to a browser. Some codes (for example, 404) are displayed to visitors on a page. List of HTTP Return Codes 1xx Informational 100 Continue 101 Switching Protocols 2xx Successful […]

What is an API? API stands for “Application Programming Interface.” An API is a set of commands, functions, protocols, and objects that programmers can use to create software or interact with an external system. It provides developers with standard commands for performing common operations so they do not have to write the code from scratch.

What is TVML? Apple’s Television Markup Language (TVML) is an XML based language that is used to display information on the screen. TVML templates define what elements can be used and in what order and are designed to display information in a specific way.