Biostatistics Quiz

What is the science of collecting, summarizing, presenting, and interpreting data called?

• Data Science

• Biostatistics

• Statistics

• Epidemiology

Which of the following is NOT a method of data collection?

• Hospital records

• Statistical analysis

• Field surveys

• Census

What type of data is defined as having no statistical importance?

• Constant data

• Qualitative data

• Variable data

• Quantitative data

Which of the following is an example of a qualitative variable?

• Weight

• Height

• Blood type

• Blood pressure

What is the average of a set of observations called?

• Mode

• Midrange

• Median

• Mean

What is the term for the most frequently occurring value in a dataset?

• Mode

• Mean

• Median

• Range

Which measure indicates the spread of data points in a dataset?

• Median

• Standard deviation

• Mode

• Mean

What is the formula for calculating variance?

• ΣX² / n

• Σ(X - X̄) / n

• Σ(X - X̄)² / n

• ΣX / n

What does the coefficient of variation (COV) measure?

• Central tendency

• Dispersion

• Data collection

• Frequency

What is the interquartile range (IQR)?

• Q2 - Q1

• Q3 + Q2

• Q3 - Q1

• Q1 + Q3