A school principal is trying to decide how long the breaks should be between periods. He plans to time how long it takes several students to get from one classroom to another. Name a tool he could use to collect the data.
The U.S. Mint uses very strict standards when making coins. On a tour of the mint, Casey asks, “How much copper is in each penny?” Lenny asks, “What is the value of a nickel?” Who asked a statistical question?
The table shows the lengths of the songs played by a radio station during a 90-minute period. Alicia is making a histogram of the data. What frequency should she show for the interval 160–169 seconds?