Podcast
Questions and Answers
What is the primary focus of the field of statistics?
What is the primary focus of the field of statistics?
What is the main difference between mathematical statistics and applied statistics?
What is the main difference between mathematical statistics and applied statistics?
What is a data set?
What is a data set?
What is the difference between a quantitative variable and a qualitative variable?
What is the difference between a quantitative variable and a qualitative variable?
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What is a population in statistics?
What is a population in statistics?
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What is the primary focus of biostatistics?
What is the primary focus of biostatistics?
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What is an example of a qualitative variable?
What is an example of a qualitative variable?
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What is the primary goal of summarizing data?
What is the primary goal of summarizing data?
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What is a variable in statistics?
What is a variable in statistics?
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What is the difference between a sample and a population?
What is the difference between a sample and a population?
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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 the basics of statistics, including data analysis, experiment design, and hypothesis testing. Understand the divisions of statistics and its applications.
