It's a common question parents ask. "How tall will my child be? Will they be tall enough to play basketball? What's the average height for a boy or girl that is my child's age?" These questions can all be answered with a couple easy questions and the help of some statistics provided by the CDC.
You may or may not be familiar with Priceline's "Express Deals". Express Deals are discounted hotel rooms that come with a slight catch: you don't know exactly which hotel you're booking until after you've already paid, and they're non-refundable and non-cancellable.
The government of a country, or the Federal Reserve Bank in the case of the United States, is able to control the value of their currency. In the US, this is done by issuing Treasury Bonds at with higher or lower interest rates. Higher interest rates generate increased demand for American Treasury Bonds.
The USDA publishes tables showing how much Americans can expect to spend on food each week. The tables are broken down by family size, gender, and age. They're further divided into four categories: thrifty, low-cost, moderate-cost, and liberal. These charts are updated every month. I first learned about these tables from an article about celebrities trying to live like they were on food stamps.