Rank-sum
Rank-sum is a non-parametric statistical test used to compare two independent groups. It is also known as the Mann-Whitney U test. The test is used to determine whether two independent samples were drawn from populations having the same distribution or not. The rank-sum test is used when the data is not normally distributed or when the sample size is small. The test involves ranking all the observations from both groups together, then calculating the sum of the ranks for each group. The test statistic is the smaller of the two sums. The p-value is calculated from the test statistic and the sample size, and is used to determine whether the difference between the two groups is statistically significant or not.
Your Previous Searches
Random Picks
- Innovation: Innovation refers to the process of creating new ideas, products, or services that add value to the existing ones. In the context of data science and artificial intelligence, innovation involves the development of new algorithms, models, an ... Read More >>
- Trojan Horses: In the context of Data Science and Artificial Intelligence, Trojan Horses refer to malicious code or software that is disguised as legitimate software or data. These programs are designed to infiltrate a system undetected and can be used to ... Read More >>
- Interpretation: ... Read More >>
Top News
Meta approves bonuses of up to 200% of company executives' salaries...
Meta approved a plan to increase bonuses for company executives to up to 200% of their base pay amid layoffs targeting about 4,000 employees....
News Source: Business Insider on 2025-02-21
Dr. Mehmet Oz holds millions from companies that he'd wield power over if confir...
Dr. Mehmet Oz holds millions of dollars worth of shares in health insurance, fertility, pharmaceutical and vitamin companies...
News Source: ABC News on 2025-02-20
Elon Musk quietly built a second mega-data center for xAI in Atlanta with $700 m...
xAI built a massive data center in Memphis last year, but the company has also been quietly setting up another facility in Georgia....
News Source: Business Insider on 2025-02-20
China's Alibaba sees revenue surge on back of artificial intelligence, e-commerc...
Chinese e-commerce firm Alibaba Group Holding posted its fastest revenue growth in over a year, beating analyst expectations as it capitalizes on the artificial intelligence boom in China...
News Source: ABC News on 2025-02-20
Why the billionaire class is kissing Trump’s proverbial ring...
The billionaire set and the massive corporations they represent are not showing deference to the president....
News Source: Al Jazeera English on 2025-02-20