Consider the following examples of two different types of statistical investigations. Example 1 Radio rating services sometimes collect data on listenership by asking participants to record the date, time, and station each time they listen to the radio.
Popular types of invisible braces include ceramic brackets, inside braces and clear aligners. Ceramic braces are just like metal braces, except that they use tooth-colored brackets (and sometimes tooth-colored wires) rather than metal to straighten teeth.
Braces (Definition). They are used in orthodontics. The braces are put onto the teeth at precise anatomical locations, and wire runs through the braces and brings teeth into proper alignment. This is a very short answer for a very big specialty.