The Positioning Indicating Device (PID) Is Sometimes Called a "Cone

question 21

Multiple Choice

The positioning indicating device (PID) is sometimes called a "cone" because the PID of early dental x-ray machines was of a pointed shape.

• A) Both the statement and reason are correct and related.
• B) Both the statement and reason are correct but NOT related.
• C) The statement is correct, but the reason is NOT.
• D) The statement is NOT correct, but the reason is correct.
• E) NEITHER the statement NOR the reason is correct.

---

Definitions:

Categorical Data

Data that fit into distinct categories such as zip code or academic major.

Continuous Data

Data with incremental values between the minimum and maximum. For example, age can have values of years, months, weeks, days, hours, minutes, or seconds.

Frequencies

The counts or occurrences of specific events or characteristics in a set of data.

Central Tendency

A statistical measure that identifies a single value as representative of the middle of a dataset, commonly by using the mean, median, or mode.