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2. Sampling design - Wikipedia

   en.wikipedia.org/wiki/Sampling_design

   Sample design for managerial research. In business research, companies must often generate samples of customers, clients, employees, and so forth to gather their opinions. Sample design is also a critical component of marketing research and employee research for many organizations. During sample design, firms must answer questions such as:

3. Wikipedia - Wikipedia

   en.wikipedia.org/wiki/Wikipedia

   Wikipedia is the largest and most-read reference work in history. [3] [4] It is consistently ranked as one of the ten most popular websites in the world, and as of 2024 is ranked the fifth most visited website on the Internet by Semrush, [5] and second by Ahrefs. [6]

4. C (programming language) - Wikipedia

   en.wikipedia.org/wiki/C_(programming_language)

   C ( pronounced / ˈsiː / – like the letter c) [6] is a general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs. It has found lasting use in operating systems, device drivers, and ...

5. Design matrix - Wikipedia

   en.wikipedia.org/wiki/Design_matrix

   The design matrix has dimension n-by-p, where n is the number of samples observed, and p is the number of variables measured in all samples. [4] [5] In this representation different rows typically represent different repetitions of an experiment, while columns represent different types of data (say, the results from particular probes).

6. Design of experiments - Wikipedia

   en.wikipedia.org/wiki/Design_of_experiments

   Design of experiments with full (left), with second-degree polynomial (right) The design of experiments ( DOE or DOX ), also known as experiment design or experimental design, is the design of any task that aims to describe and explain the variation of information under conditions that are hypothesized to reflect the variation.

7. Wikipedia, the free encyclopedia

   en.wikipedia.org/wiki/Main_Page

   It was formed approximately 4.5 billion years ago, is a terrestrial planet and is the second smallest of the Solar System 's planets with a diameter of 6,779 km (4,212 mi). A Martian solar day ( sol) is 24.5 hours and a Martian solar year is 1.88 Earth years (687 Earth days). Mars has two small and irregular natural satellites: Phobos and Deimos.