Nokea
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.
You may also like to solve these questions
M.S in Public Health in IOM was stopped in
- A. 1996
- B. 1997
- C. 1998
- D. 1999
Correct Answer: A
Rationale: The MS in Public Health program at IOM was discontinued in 1996.
Hottest year was
- A. 2001
- B. 2002
- C. 2003
- D. 2004
Correct Answer: C
Rationale: The year 2003 was recorded as one of the hottest years globally due to climate change impacts.
Precision stands for—
- A. Reliability
- B. accuracy
- C. consistency
- D. validity
Correct Answer: A
Rationale: Precision denotes the reliability and consistency of measurements.
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.
Vaccine that should be kept in freezer are
- A. Polio, DPT, measles
- B. Polio measles BCG
- C. BCG DPT measles
- D. BCG DPT and polio
Correct Answer: A
Rationale: Polio vaccines must be stored frozen to maintain their efficacy; other vaccines like DPT and measles require refrigeration but not freezing.