Stratified Sampling
Stratified Sampling is a sampling technique in which the population is divided into homogeneous subgroups called strata, and a random sample is taken from each stratum. This technique ensures that each stratum is represented in the sample, which helps to reduce sampling error and increase the accuracy of the results. Stratified Sampling is commonly used in Data Science to ensure that the sample is representative of the population, especially when the population is heterogeneous. It is particularly useful when the variable of interest is known to be related to a certain characteristic of the population, such as age, gender, or income. By stratifying the population based on this characteristic, the sample can be selected in a way that ensures that each subgroup is represented in the sample in proportion to its size in the population.
Your Previous Searches
Random Picks
- Debugging: Debugging is the process of identifying and resolving errors, bugs or defects in software applications, computer programs, or systems. It involves a systematic approach to finding and fixing problems that prevent the software or system from ... Read More >>
- Boolean Function: A Boolean function is a mathematical function that maps input values to a single output value of either true or false. In data science and artificial intelligence, Boolean functions are commonly used in logic circuits, decision trees, and o ... Read More >>
- Country Code: In Data Science, a country code is a numerical or alphabetical code assigned to each country and used to represent that country in various data processing systems. Country codes are commonly used in data analysis and machine learning applic ... Read More >>
Top News
A battery plant fire in California started during a boom for energy storage...
A fire at a one of the world’s largest battery plants in California contained tens of thousands of lithium batteries that store power from renewable energy sources...
News Source: ABC News on 2025-01-17
A legendary investor who predicted the dot-com crash says there's a key ingredie...
"The markets, while high-priced and perhaps frothy, don't seem nutty to me," Howard Marks said....
News Source: Business Insider on 2025-01-17
LVMH's Bernard Arnault ousts Larry Ellison as the world's 4th-richest person aft...
Bernard Arnault is outpacing Elon Musk and Mark Zuckerberg in wealth gain this year after signs of a rebound in luxury demand boosted LVMH stock....
News Source: Business Insider on 2025-01-17
Tech giants sounded the alarm about climate change. Now they're warming up to Tr...
Tech giants sounded the alarm about climate change. Now they're warming up to Trumpgo.com...
News Source: ABC News on 2025-01-17
World's first AI chatbot has finally been resurrected after decades...
ELIZA is famous as a rudimentary artificial intelligence and the first ever chatbot, but versions found online today are actually knock-offs because the original computer code was lost - until now...
News Source: New Scientist on 2025-01-17