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Questions and Answers
What is the primary focus of statistics?
What is the branch of applied statistics that deals with health sciences and biology?
What is the term for a collection of data?
What is the term for a single observation or measurement?
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What is a characteristic that can be measured in some way?
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What is a characteristic that cannot be measured but can be sorted into categories?
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What is the collection of all values a variable may have?
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What is a part of a population?
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What is the process of drawing conclusions from data?
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What is the application of statistical methods to solve real problems?
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Study Notes
Statistics and Biostatistics
- Statistics is the study and use of theory and methods for the analysis of data arising from random processes or phenomena.
- It involves making sense of data and provides fundamental tools and techniques of the scientific method.
- Statistics involves:
- Forming hypotheses
- Designing experiments and observational studies
- Gathering data
- Summarizing data
- Drawing inferences from data and testing hypotheses
Divisions of Statistics
- Mathematical Statistics: studies and develops statistical theory and methods in the abstract.
- Applied Statistics: applies statistical methods to solve real problems involving randomly generated data and develops new statistical methodology motivated by real problems.
Biostatistics
- Biostatistics is the branch of applied statistics directed towards applications in the health sciences and biology.
- It involves the application of statistical methods to solve problems in health sciences and biology.
Data and Variables
- Data: observations of random variables made on the elements of a population or sample.
- Data can be quantities, numbers, or qualities, attributes measured or observed, and collected and/or analyzed.
- A collection of data is often called a data set.
- Variables:
- Can be quantitative (measurable): heart rate, heights, weight, age, size of tumor, volume of a dose.
- Can be qualitative (categorical): gender, race, drug name, disease status.
Populations and Samples
- A population: the collection or set of all of the values that a variable may have.
- A sample: a part of a population.
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Description
Learn about the basics of biostatistics, including the study of statistics, forming hypotheses, designing experiments, and gathering data. This quiz covers the fundamentals of biostatistics and its applications.
