To Reduce the Variability of Estimates from a Simple Random

question 53

Multiple Choice

To reduce the variability of estimates from a simple random sample, one should

• A) use a smaller sample.
• B) increase the bias.
• C) use a count, not a percent.
• D) use a larger sample.
• E) use a percent, not a count.

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Definitions:

Computerised Tomography

A medical imaging technique that uses computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional images of specific areas of a scanned object.

Positron Emission Tomography

A diagnostic imaging technique that uses radioactive substances to visualize and measure changes in metabolic processes.

Stereotaxic Lesioning

Stereotaxic lesioning is a neurosurgical method used to intentionally damage or destroy specific areas of the brain in experiments or treatment.

Cerebrospinal Fluid

The clear, colorless body fluid found in the brain and spinal cord that provides cushioning and nutrients.