Statistical Power. The Statistical Data Analysis tutorial page provides a good background for understanding the concept of statistical power. In very basic terms, statistical power is the likelihood of achieving statistical significance, when in fact the alternative hypothesis is true.
In 2001, the U.S. Census Bureau estimated that nearly 7 million school-age children are routinely left home alone. âDevelopmentally, children are generally ready to be home alone around the age of 12 or 13,â says Cherie Sage, State Director of Safe Kids Kansas.
Call your State DHS or local child welfare agency to learn about age guidelines in your area. Some information taken with permission from http://www.latchkey-kids.com. *Age listed is the recommended minimum age a child may be left home alone in lieu of a legally specified age minimum. **City of Albuquerque Ordinance states that children under the age of 11 may not be left home alone.