The rule is often called Chebyshev's theorem, about the range of standard deviations around the mean, in statistics. The inequality has great utility because it can be applied to completely arbitrary distributions (unknown except for mean and variance). For example, it can be used to prove the weak law of large numbers. In practical usage, in contrast to the 68-95-99.7% rule, which applies to normal distributions, under Chebyshev's inequality a minimum of just 75% of values must lie within two standard deviations of the mean and 89% within three standard deviations.
City of Page. Welcome to City of Page, Arizona. Page is a small town in northern Arizona located on the southern shores of magnificent Lake Powell. Our friendly community offers visitors outstanding recreation and a wide variety of lodging and services.
Maricopa County, Arizona. Maricopa County (/ËmÃ¦ráµ»ËkoÊpÉ/ MARR-i-KOH-pÉ) is a county in the south-central part of the U.S. state of Arizona. As of the 2010 census, its population was 3,817,117, making it the state's most populous county, and the fourth-most populous in the United States. It is more populous than 23 states.