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.
Just this week a woman in Davenport was charged with child neglect after leaving her 10 and 13-year-old kids home alone while she went to the bar. But Iowa doesn't have a law requiring your child to be a certain age to stay home alone. Iowa doesn't have a law regarding what age a child should be before they start babysitting either. Both those decisions are up to parents. But officials say if you leave you kids alone and something bad happens, you're held responsible. It's a really hard call, Tara Roddick with Project Concern said.