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.
Leaving Children at Home Alone. There is no magic age when a child is ready to stay by him/herself. All children are different, but the National Safe Kids Campaign recommends that no child under the age of 12 be left at home alone. Whether children are home every day after school or once in a while when parents need to run errands, the experience can be made safer by considering the following: