A Province-Wide Sample Survey Is to Be Made

question 68

Multiple Choice

A province-wide sample survey is to be made. First, the province is subdivided into counties. Seven counties are selected at random and further sampling is concentrated on these seven counties. What type of sampling is this?

• A) Simple random
• B) Non proportional
• C) Cluster
• D) Stratified

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Definitions:

Retrograde Pyelography

A diagnostic X-ray technique in which a contrast medium is introduced into the kidneys from the bladder to visualize the urinary system.

Urethral Catheter

A pliable conduit placed via the urethra into the bladder for the purpose of draining urine.

Contrast Medium

A substance used in medical imaging to improve the visibility of internal bodily structures in radiographic studies like MRIs and CT scans.

Invasive Procedure

A medical test or operation that involves entering the body, often through cutting or inserting instruments into a body cavity.