Nokea
In epidemiology, the measure of central location generally preferred for summarizing skewed data such as incubation periods is the:
- A. Mean
- B. Median
- C. Midrange
- D. Mode
Correct Answer: B
Rationale: The median is less affected by outliers and skewed data.
You may also like to solve these questions
What methods are commonly used for surveillance data collection?
- A. Vital registration.
- B. Randomized clinical trials.
- C. Disease notifications.
- D. Population surveys.
Correct Answer: D
Rationale: Population surveys provide valuable data on health-related behaviors and population health status.
Name the four major classes of pesticides.
- A. Organochlorines, organophosphates, carbamates, pyrethroids.
- B. Antibiotics, antifungals, herbicides, rodenticides.
- C. Insecticides, fungicides, herbicides, acaricides.
- D. Biological agents, synthetic agents, natural agents, chemical agents.
Correct Answer: A
Rationale: The four major classes of pesticides are organochlorines, organophosphates, carbamates, and pyrethroids.
The true regarding chi square test:
- A. Null hypothesis is equal
- B. Does not test the significance
- C. Tests correlation and regression
- D. Measures the significance of difference between two proportions
Correct Answer: D
Rationale: Chi-square tests assess differences between observed and expected frequencies.
What does routine analysis of notifiable disease data at the state level include?
- A. Number of cases reported this week and during the previous 2-4 weeks.
- B. Number of cases reported this week and during comparable weeks of the previous 2-5 years.
- C. Simultaneous analysis by age, race, and sex of the patient.
- D. Analysis by county.
Correct Answer: D
Rationale: County-level analysis helps localize outbreaks or regional differences in disease burden.
Precision stands for—
- A. Reliability
- B. accuracy
- C. consistency
- D. validity
Correct Answer: A
Rationale: Precision denotes the reliability and consistency of measurements.