This example illustrates the use of regression analysis in a simple random cluster sampling design. The data are from S rndal, Swenson, and Wretman (1992, p. 652). A total of 284 Swedish ...

The data set Customers contains an Internet service provider's current subscribers, and the service provider wants to select a sample from this population for a customer satisfaction survey. This ...

True random sampling gives a better estimation of your data. Random sampling is a statistical method of selecting a sample of ...

Random sampling eliminates bias by generating the points randomly. Now you need sampling tools. For example, you could use a pooter jar, a pitfall trap or a sweep net or to count plants or slow ...