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Statistics and Sample Size Calculation
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Statistics and Sample Size Calculation

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Questions and Answers

What is the formula used to calculate the sample size of a class size?

  • n = N / (1 + (e^2) / N) (correct)
  • n = N * (1 - (e^2) / N)
  • n = N / (1 + N(e^2))
  • n = N - (e^2) / N

    • What is the value of 'e' in the sample size formula if the desired margin of error is 5% and the confidence level is 95%?

  • 0.5
  • 1.96
  • 0.025 (correct)
  • 0.05

    • If the class size is 96, what is the approximate sample size at a 95% confidence level and a 5% margin of error?

  • 85
  • 67
  • 76
  • 81 (correct)

    • What is the purpose of calculating the sample size?

    <p>To reduce the cost and time of data collection</p> Signup and view all the answers

    What assumption is made when calculating the sample size?

    <p>The sample is randomly selected</p> Signup and view all the answers

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