Biostatistics 1

What is the primary purpose of biostatistics in public health research?

• To collect data
• To analyze and interpret data
• To display data
• To store data

Answer explanation

Biostatistics helps in analyzing and interpreting health data to make informed decisions.

Which of the following best describes the scope of biostatistics?

• Only clinical trials
• Environmental studies
• A wide range of health-related studies
• Genetic research only

Answer explanation

Biostatistics covers a broad range of health-related studies beyond just clinical trials.

Biostatistics is commonly used in which of the following fields?

• Education
• Engineering
• Healthcare and medicine
• Finance

Answer explanation

Biostatistics is heavily used in healthcare and medicine to improve patient outcomes.

What is the key characteristic of a random sampling method?

• Sampling every 10th person
• Each member of the population has an equal chance of being selected
• Selecting individuals based on specific characteristics
• Choosing individuals who are readily available

Answer explanation

Random sampling ensures unbiased representation of the population.

Which of the following is an example of primary data?

• Census data
• Survey responses from a new study
• Academic journal articles
• Government reports

Answer explanation

Primary data is collected firsthand through new surveys or experiments.

Which of the following is an example of qualitative data?

• Weight of a patient in kilograms
• Age of students in years
• Blood type of a patient
• Number of hospital visits

Answer explanation

Blood type is a qualitative attribute, representing a category rather than a numerical value.

Which of the following is an example of continuous data?

• Number of children in a family
• Temperature in Celsius
• Number of cars in a parking lot
• Number of students in a class

Answer explanation

Temperature is continuous as it can take on an infinite number of values within a range.

Which statistical measure is used to describe the central tendency of a data set?

• Standard deviation
• Mean
• Variance
• Range

Answer explanation

Mean is the average value and a measure of central tendency.

What is one of the main aims of biostatistics in clinical trials?

• To ensure patient confidentiality
• To assess the effectiveness of treatments
• To promote the pharmaceutical industry
• To recruit participants

Answer explanation

Biostatistics assesses treatment effectiveness to ensure safety and efficacy.

In epidemiology, biostatistics is used primarily to:

• Design studies
• Report findings
• Analyze the distribution and determinants of diseases
• Disseminate health policies

Answer explanation

Biostatistics helps in understanding disease patterns and determinants in populations.