Power analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required sample size for ...
Jason Fernando is a professional investor and writer who enjoys tackling and communicating complex business and financial problems. Erika Rasure is globally-recognized as a leading consumer economics ...
The following statements create a SAS data set named BATTERY, which contains the number of alkaline batteries per lot failing an acceptance test. The number of batteries tested in each lot varies but ...
The standard formulas used to calculate sample size for an individually matched case-control study assume a constant probability of exposure throughout the pool of possible controls. We propose new ...
RBR’s lead story today (6/30) has Arbitron defending its sample size. That’s a story we’ve heard for years. For most of my career, Arbitron defended ratings produced by the diary method. They used ...
The following data set (WIRE) contains breaking strength measurements recorded in pounds per inch for 25 samples from a metal wire manufacturing process. The subgroup sample sizes vary between 3 and 7 ...
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