Standard error is measure of
- A. Conceptual error
- B. Sampling error
- C. Instrumental error
- D. Observer error
Correct Answer: B
Rationale: Standard error quantifies the precision of the sample mean as an estimate of the population mean.
You may also like to solve these questions
Why is the availability of a reliable and safe water source a concern to officials in the United States and the rest of the world?
- A. Waterborne diseases, scarcity issues.
- B. Abundant freshwater reserves globally.
- C. Low demand for clean water.
- D. Complete reliance on desalination.
Correct Answer: A
Rationale: Access to safe water prevents waterborne diseases and addresses growing scarcity concerns worldwide.
Are you able to define the following?
- A. A system that collects information on cases of specific diseases for epidemiological study.
- B. A national survey on general health status.
- C. A program focused on nutritional assessments.
- D. An annual report on hospital admissions.
Correct Answer: A
Rationale: A disease registry is specifically designed to collect detailed information about cases of particular diseases, making it invaluable for tracking and studying disease patterns.
Describe the significance for epidemiology of the use of vital statistics.
- A. Vital statistics provide data on births and deaths.
- B. Vital statistics are irrelevant to epidemiology.
- C. Vital statistics are used only for economic analysis.
- D. Vital statistics focus solely on infectious diseases.
Correct Answer: A
Rationale: Vital statistics help track population health trends and identify outbreaks or patterns.
Istanbul declaration 1996 habitat II is related to:
- A. RH
- B. Health promotion
- C. PHC
- D. Population development
Correct Answer: D
Rationale: The Istanbul Declaration addressed issues related to population and sustainable development.
The LD50 of highly toxic substance is.... mg/ kg.
- A. less than 1
- B. Jan-50
- C. 51-500
- D. 50-500
Correct Answer: A
Rationale: Highly toxic substances have an LD50 value of less than 1 mg/kg, indicating extreme toxicity.