Example of how to perform a one-sample statistical hypothesis test.
I explained this in a previous response, but I thought I should explain this again. When performing a hypothesis test for the population mean, and the population standard deviation is unknown (which it almost always is), if you have a random sample and the following conditions apply, you should perform a t-test. (1) The sample size is small compared to the population size (n less than or equal to 0.05N) - this is to account for the fact that in most cases we are sampling from a finite population and we don't have independent trials (and the sampling distribution of the sample mean requires that). (2) The population from which the sample is drawn is normal, OR, the sample size is sufficiently large (which most textbooks say if n is at least 30, although that value is rather conservative in some cases). If neither condition of (2) applies and you have the sample data, you can perform a normal probability plot to determine whether it appears that the data come from a population that is normal, and a modified box-and-whisker plot to make sure there are no outliers (because the test statistic uses the sample mean and the sample standard deviation - both of which are not resistant to outliers). Now, with that being said, because the t-distribution begins to look very similar to the z-distribution when the sample size is greater than or equal to 30, some introductory statistics textbooks encourage the student to just use the z-test when n is greater than or equal to 30 (that's what I did when I wrote this example). However, to be safe, it is best to simply always use the t-test in this situation.๏ปฟ
About the Site ๐
This site provides links to random videos hosted at YouTube, with the emphasis on random. ๐ฅ
Origins of the Idea ๐ฑ
The original idea for this site stemmed from the need to benchmark the popularity of a video against the general population of YouTube videos. ๐ง
Challenges Faced ๐ค
Obtaining a large sample of videos was crucial for accurate ranking, but YouTube lacks a direct method to gather random video IDs.
Even searching for random strings on YouTube doesn't yield truly random results, complicating the process further. ๐
Creating Truly Random Links ๐ ๏ธ
The YouTube API offers additional functions enabling the discovery of more random videos. Through inventive techniques and a touch of space-time manipulation, we've achieved a process yielding nearly 100% random links to YouTube videos.
About YouTube ๐บ
YouTube, an American video-sharing website based in San Bruno, California, offers a diverse range of user-generated and corporate media content. ๐
Content and Users ๐ต
Users can upload, view, rate, share, and comment on videos, with content spanning video clips, music videos, live streams, and more.
While most content is uploaded by individuals, media corporations like CBS and the BBC also contribute. Unregistered users can watch videos, while registered users enjoy additional privileges such as uploading unlimited videos and adding comments.
Monetization and Impact ๐ค
YouTube and creators earn revenue through Google AdSense, with most videos free to view. Premium channels and subscription services like YouTube Music and YouTube Premium offer ad-free streaming.
As of February 2017, over 400 hours of content were uploaded to YouTube every minute, with the site ranking as the second-most popular globally. By May 2019, this figure exceeded 500 hours per minute. ๐
List of ours generatorsโก
Random YouTube Videos Generator
Random Film and Animation Video Generator
Random Autos and Vehicles Video Generator
Random Music Video Generator
Random Pets and Animals Video Generator
Random Sports Video Generator
Random Travel and Events Video Generator
Random Gaming Video Generator
Random People and Blogs Video Generator
Random Comedy Video Generator
Random Entertainment Video Generator
Random News and Politics Video Generator
Random Howto and Style Video Generator
Random Education Video Generator
Random Science and Technology Video Generator
Random Nonprofits and Activism Video Generator
