Nokea
Married-unmarried, child-adult, male-female is
- A. Ordinal scale
- B. Interval scale
- C. Ratio scale
- D. Nominal scale
Correct Answer: D
Rationale: These categories represent nominal scales as they classify without any inherent order.
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The fraction 50 / 53 is a/an:
- A. Attack rate
- B. Food-specific attack rate
- C. Incidence proportion
- D. Proportion
Correct Answer: A
Rationale: This fraction represents the attack rate among those exposed to wedding cake.
Calculate the percentage decline in the death rate for all causes. What generalizations can be made about changes in disease rates between 1900 and the present?
- A. Death rates declined significantly due to advancements in healthcare.
- B. Death rates increased due to population growth.
- C. Death rates remained constant despite medical advancements.
- D. Death rates fluctuated without clear trends.
Correct Answer: A
Rationale: Death rates have declined significantly since 1900 due to improvements in healthcare, sanitation, and living conditions.
Mortality experience is taken into consideration when defining
- A. General fertility rate
- B. Total fertility rate
- C. Net reproduction rate
- D. Gross reproduction rate
Correct Answer: C
Rationale: Net Reproduction Rate (NRR) considers mortality experience, as it reflects the average number of daughters a woman would have if she survived through her reproductive years.
Median is almost equivalent to
- A. 25th percentile
- B. 50th percentile
- C. 75th percentile
- D. 10th percentile
Correct Answer: B
Rationale: The median corresponds to the 50th percentile, dividing the dataset into halves.
What health effects have been studied in relation to this event?
- A. Thyroid cancer, leukemia, psychological trauma.
- B. Improved immune function, enhanced cognition.
- C. Weight loss, increased energy.
- D. Better vision, faster reflexes.
Correct Answer: A
Rationale: Studies have linked Chernobyl radiation exposure to thyroid cancer, leukemia, and mental health impacts.