List of top Public Health Questions on Biostatistics

Which statistical test is most appropriate for comparing the mean hemoglobin levels between two independent groups?
The proportion of frequencies lying on either side of the mean in a normal distribution curve within a range of +1 to -1 standard deviation is approximately:
Best sampling method where every unit in the population has an equal chance of being included in the sample is:
Measures of variations or dispersion of data are: A. Interquartile Range B. Mode C. Standard Deviation D. Weighted Mean
Measure of Central Tendency useful in markedly skewed distribution is:
Coefficient of correlation (represented by the symbol "r") is calculated:
Pearl Index is defined as:
Active immunity is acquired by:

Match the LIST-I with LIST-II 

LIST-ILIST-II
A. IsolationIV. Separation for the period of communicability of infected persons
B. QuarantineII. Limitation of freedom of movements of well person exposed to communicable disease for a period of longest incubation period of the disease to prevent transmission of infection to those not exposed to infection
C. EliminationI. Interruption in transmission of disease
D. EradicationIII. Termination of all transmission of infections by extermination of infectious agents
Arrange the given step-by-step approach in the investigation of an Epidemic in ascending order. A. Formulation of hypothesis B. Verification of diagnosis C. Data analysis D. Confirmation of the existence of an epidemic

Match List-I with List-II 

LIST-ILIST-II
A. BhoreIII. All India Health Service on the pattern of IAS
B. MudaliarI. Primary Health Units with 75 bedded hospitals for 10-20000 population
C. ChadahIV. One Primary Health Centre for the population of 50000
D. Kartar SinghII. One basic health worker per 10000 population
According to WHO BMI (Body-mass index) classification, Pre-obese value is:
Reference Interval for Sperm characteristics in semen associated with fertility are:
(A) 14% or more have normal morphology
(B) 75% or more are alive
(C) 10×106 sperm per mL
(D) 50% or more with moderate to rapid linear (forward) progression
Choose the correct answer from the options given below:

Match List I with List II:

List I (Indicator)List II (Denominator)
A. Specific death rate due to tuberculosisI. Total number of COVID-19 cases
B. Specific death rate for malesII. Mid-year population
C. Case fatality rate for COVID-19III. Mid-year population of males
D. Specific death rate in age group 15-19 yearsIV. Mid-year population of persons aged 15-19

Choose the correct answer from the options given below:

Which of the following are measures of variation (dispersion)?
1. Mean
2. Standard deviation
3. Range
4. Mean deviation
Which of the following are probability sampling methods?
1. Simple random sampling
2. Systematic random sampling
3. Stratified random sampling
4. Purposive sampling
Diastolic blood pressure readings of four patients are given below. Arrange them according to increasing median diastolic blood pressure (least median first):
1. 83, 71, 81, 79, 71
2. 90, 83, 75, 90, 89
3. 70, 72, 87, 75, 87
4. 75, 84, 81, 95, 95
Following are some of the basic steps in conducting a Randomised Controlled Trial (RCT). Arrange them in order:
1. Randomisation
2. Drawing up a protocol
3. Intervention or manipulation
4. Assessment of outcome
What is the mode in the following dataset? 35, 44, 33, 35, 37, 44, 37, 35
What is the range in the following dataset? 42.50, 44, 38, 35.45
Which of the following is a nominal variable?
Which of the following graph is best suited to show the trend of events with time?
Which of the following statistical test is most suited for a continuous variable where data is collected before and after an intervention?
Which of the following statistical test is used for a bivariate analysis when both the variables are categorical?
Which among the following is NOT a limitation of experimental designs?