Put Your Statistical Skills to the Test
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Questions and Answers

Which of the following is NOT a measure of central tendency?

  • Mean
  • Mode
  • Range (correct)
  • Median

    • What is the purpose of using inferential statistics in research?

  • To test hypotheses about the differences between groups
  • To determine the cause-and-effect relationship between variables
  • To make predictions about a population based on a sample (correct)
  • To describe the characteristics of a sample

    • What is the difference between a Type I and Type II error in hypothesis testing?

  • Type I error is rejecting the null hypothesis when it is actually true, while Type II error is failing to reject the null hypothesis when it is actually false (correct)
  • Type I error is failing to reject the null hypothesis when it is actually false, while Type II error is rejecting the null hypothesis when it is actually true
  • Type I error occurs when the sample size is too small, while Type II error occurs when the sample size is too large
  • Type I error occurs when the sample is not representative, while Type II error occurs when the sample is biased

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