Telephone Directories Can Be Inadequate Sampling Frames

question 12

Essay

Telephone directories can be inadequate sampling frames.Suppose the population were defined as "all telephone subscribers in the directory's service area." What criticisms could you make of the telephone directory as a sampling frame?

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Definitions:

Peptic Ulcers

sores that develop on the lining of the stomach, lower esophagus, or small intestine, usually due to infection or chronic use of anti-inflammatory medications.

Causal Agent

A factor that is directly responsible for causing a certain outcome or condition, often used in the context of diseases or environmental changes.

Bile

The fluid secreted by the liver; emulsifies fats.

Gallbladder

A small organ located beneath the liver that stores and concentrates bile, a digestive enzyme produced by the liver.