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.
Both accuracy and precision reflect how close a measurement is to an actual value, but accuracy reflects how close a measurement is to a known or accepted value, while precision reflects how reproducible measurements are, even if they are far from the accepted value.ou can think of accuracy and precision in terms of hitting a bullseye. Accurately hitting the target means you are close to the center of the target, even if all of the marks are on different sides of the center.