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Biostatistics: Analysis in Life Sciences
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Biostatistics: Analysis in Life Sciences

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Questions and Answers

What is the main purpose of selecting a sample from a population in biostatistics?

  • To eliminate the need for inferential statistics
  • To make valid conclusions about the entire population (correct)
  • To guarantee the sample includes all variables of interest
  • To ensure the sample represents the entire population accurately
  • In biostatistics, what is the difference between a qualitative and a quantitative variable?

  • Qualitative variables are expressed numerically, while quantitative variables are not.
  • Qualitative variables can only be observed in more than two categories, while quantitative only in two categories.
  • Qualitative variables can be measured numerically, but quantitative variables cannot.
  • Qualitative variables assume a succession of values, whereas quantitative variables do not. (correct)
  • What characterizes a continuous variable in biostatistics?

  • It produces numerical responses that arise from count data.
  • It differs in kind rather than degree among group members.
  • It produces numerical responses from measured data. (correct)
  • It can be observed in two categories only.
  • Why are smaller study groups preferred in biostatistics for certain procedures?

    <p>Smaller groups allow for more complicated and accurate technical methods.</p> Signup and view all the answers

    What is the main advantage of using inferential statistics in biostatistics?

    <p>To make valid conclusions about the entire population from sample data</p> Signup and view all the answers

    What is the primary role of biostatistics in medical research?

    <p>Designing a research project</p> Signup and view all the answers

    Which of the following is NOT a common use of biostatistics as mentioned in the text?

    <p>Operating medical equipment in hospitals</p> Signup and view all the answers

    What does 'variation' refer to in the context of biostatistics and medical research?

    <p>The tendency of a measurable characteristic to change with respect to person, place &amp; time</p> Signup and view all the answers

    In which area does biostatistics primarily focus on analyzing population-related data?

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

    What is one of the key functions of statistics in research according to the text?

    <p>Interpreting results and drawing valid conclusions</p> Signup and view all the answers

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