But there's another aspect of Abell's work that makes this map so valuable to astronomers. He introduced a classification scheme for the galaxy clusters. Now, surveys completed since Abell's have catalogued additional galaxies and surveyed more outer space, but no one has improved upon Abell'...
What makes a good estimator? What is an estimator? Why should I care? There is an entire branch of statistics called Estimation Theory that concerns itself with these questions and we have no intention of doing it justice in a single blog post. However, modern effect estimation has come a ...
There are two aspects that it’s important to think about here: the design of the study, and whether this makes the research capable of answering the question that you are interested in; and any problems with the study that might represent “threats” to the validity of the findings. When ...
Ramit Sethi is making a killing selling a $300 online course on choosing a good personal assistant. If that’s profitable, think about what else can be. 4. Be Aware of Your Biases The most common types of cognitive bias you need to avoid are: Confirmation Bias: we always subconsciously...
A look at what goes on in most classrooms these days makes it abundantly clear that when people think about education, they are not thinking about what it feels like to be a child, or what makes childhood an important and valuable stage of life in its own right. 出自-2015年12月阅读原文...
What makes a good nanomanipulatorWhile working in research and at Oxford Instruments, I have used many different FIB-SEM’s and manipulator combinations. On paper the systems were almost identical, but the reality as a user was very different. There were systems where you dreaded liftout ...
Non-Probability Sampling:Researchers who use this sampling method deliberately choose their samples. This makes it a non-random sampling method. Since it isn't random, only a certain portion of the population has a chance to participate in the study. Samples are chosen based on certain factors,...
14. When a good person dies, there should be an impact on the world. Somebody should notice. Somebody should be upset. 当一个好人离世之时,应该多少对这个世界产生一些影响,应该有人知晓,也应该有人悲伤 15. You wouldn't even consider the notion that Clarence's social upbringing was responsible ...
Each of these procedures is essential for making sure the good or service reaches the required standard of quality. Why do we need Quality Planning? The ability to meet or exceed client expectations is made possible through quality planning, which is crucial in business. It involves creating a ...
Likert Scale Surveys are the way to go when you are gathering customer perception around a single topic. You could simply add a series of follow-up Likert-type questions on a specific topic which ultimately makes the reporting and analysis easier. ...