The World According to Mrs. Dr Rey. In our April issue we featured an interview with Dr Robert Rey (see page 160), who became famous after he and other plastic surgeons in Beverly Hills were featured in a realty TV show called Dr. 90210. Robert Rey and his wife Hayley have been married since 2000 and have two children together, Sydney and Robby. We decided to take a look into the life of Dr Reyâs better half and asked her about her husband, her loves, plastic surgery and reality TV.
The concept of significant figures (or digits) is a convention for expressing the accuracy of a measurement. When working with real-world data, it is crucial that every measured value be as accurate as possible. Attempts must be made to minimize uncertainty when expressing measurements.
Accuracy and precision are synonymous; however they are very different from each other. Accuracy is the degree of closeness of a measurement of a quantity to a âtrueâ value. Precision is the number of times a measurement is close to a central value.Accuracy is the amount of times a person is close to the âactualâ or âtrueâ value, while precision is the amount of times a person comes up with results similar to a value, which may or may not be precise.A measurement can be accurate, precise, both or neither.ccuracy is the amount of times a person is close to the âactualâ or âtrueâ value, while precision is the amount of times a person comes up with results similar to a value, which may or may not be precise.