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2. Product sample - Wikipedia

   en.wikipedia.org/wiki/Product_sample

   The purpose of a free sample is to acquaint the consumer with a new product, and is similar to the concept of a test drive, in that a customer is able to try out a product before purchasing it. Although an expensive method of targeting customers, conversions to sales can be as high as 90% making it one of the main marketing strategies for ...

3. Form W-9 - Wikipedia

   en.wikipedia.org/wiki/Form_W-9

   Another purpose of Form W-9 is to help the payee avoid backup withholding.The payer must collect withholding taxes on certain reportable payments for the IRS. However, if the payee certifies on the W-9 they are not subject to backup withholding they generally receive the full payment due them from the payer. [2]

4. Wikipedia:Sign up - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Sign_up

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

5. Wikipedia, the free encyclopedia

   en.wikipedia.org/wiki/Main_page

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

6. List of Facebook features - Wikipedia

   en.wikipedia.org/wiki/List_of_Facebook_features

   The news feed is the primary system through which users are exposed to content posted on the network. Using a secret method (initially known as EdgeRank), Facebook selects a handful of updates to actually show users every time they visit their feed, out of an average of 1500 updates they can potentially receive.

7. Social media optimization - Wikipedia

   en.wikipedia.org/wiki/Social_media_optimization

   Social media optimization (SMO) is the use of a number of outlets and communities to generate publicity to increase the awareness of a product, service brand or event.. Types of social media involved include RSS feeds, social news, bookmarking sites, and social networking sites such as Facebook, Instagram, Twitter, video sharing websites, and blogging

8. Biological specimen - Wikipedia

   en.wikipedia.org/wiki/Biological_specimen

   Also biobanks, which do specimen storage, cannot take full responsibility for specimen integrity, because before they take custody of samples someone must collect and process them and effects such as RNA degradation are more likely to occur from delayed sample processing than inadequate storage.

9. Snowball sampling - Wikipedia

   en.wikipedia.org/wiki/Snowball_sampling

   As the sample builds up, enough data are gathered to be useful for research. This sampling technique is often used in hidden populations, such as drug users or sex workers, which are difficult for researchers to access. As sample members are not selected from a sampling frame, snowball samples are subject to numerous biases. For example, people ...