Introduction to Biostatistics
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Questions and Answers

What is the primary focus of statistics?

  • Making sense of data (correct)
  • Designing experiments
  • Forming hypotheses
  • Collecting data

    • What is the branch of applied statistics that deals with health sciences and biology?

  • Theoretical Statistics
  • Applied Statistics
  • Mathematical Statistics
  • Biostatistics (correct)

    • What is the term for a collection of data?

  • Population
  • Variable
  • Data set (correct)
  • Datum

    • What is the term for a single observation or measurement?

    <p>Datum</p> Signup and view all the answers

    What is a characteristic that can be measured in some way?

    <p>Quantitative variable</p> Signup and view all the answers

    What is a characteristic that cannot be measured but can be sorted into categories?

    <p>Qualitative variable</p> Signup and view all the answers

    What is the collection of all values a variable may have?

    <p>Population</p> Signup and view all the answers

    What is a part of a population?

    <p>Sample</p> Signup and view all the answers

    What is the process of drawing conclusions from data?

    <p>Drawing inferences</p> Signup and view all the answers

    What is the application of statistical methods to solve real problems?

    <p>Applied Statistics</p> Signup and view all the answers

    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.

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