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. Braces are devices attached to the teeth to realign their position.Braces can be used to address a wide variety of dental issues from underbites, malocclusions, overbites, cross bites, open bites, deep bites, crooked teeth, and other problems with the teeth or jaw.