When Using Rectangular Collimation with the Paralleling Technique One Must

question 18

Multiple Choice

When using rectangular collimation with the paralleling technique one must use a (an) :

• A)localizing film-holding device
• B)bite tab
• C)8-inch FFD
• D)none of the above

Recognize the differences in sampling for demographic versus opinion surveys.

Understand the process and importance of obtaining a representative sample.

Understand different types of survey biases and their impacts on survey results.

Identify voluntary response bias and scenarios that lead to it.