Statistical Formulas

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Questions and Answers

Which formula is used to calculate the Average of a dataset?

  • COUNT(values, values)
  • MODE(no1, no2...)
  • MEDIAN(no1, no2...)
  • AVERAGE(no1, no2...) (correct)

What is the correct formula to find the median value?

  • MAX(no1, no2...)
  • AVERAGE(no1, no2...)
  • PERCENTILE(array, k)
  • MEDIAN(no1, no2...) (correct)

How does Excel determine the mode when two values repeat the same number of times?

  • Excel goes top-down and chooses the first to find mode (correct)
  • Excel chooses the highest value
  • Excel goes bottom-up
  • Excel chooses the second value

Which formula is used to find the maximum value in a dataset?

<p>MAX(no1, no2...) (A)</p> Signup and view all the answers

What does a percentile value of 25 translate to in percentage?

<p>0.25% (A)</p> Signup and view all the answers

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Study Notes

Statistical Formulas

  • Sample Size formula: COUNT(values, values)
  • Average formula: AVERAGE(no1, no2...)
  • Median formula: MEDIAN(no1, no2...)
  • Mode formula: MODE(no1, no2...)
    • If multiple values have the same frequency, Excel follows a top-down approach and returns the first value it encounters as the mode.
  • Maximum formula: MAX(no1, no2...)
  • Minimum formula: MIN(no1, no2...)
  • 25th Percentile formula: PERCENTILE(array, k)
    • k represents the data tile (e.g., 0.25 for the 25th percentile)
    • When using PERCENTILE, the range is for baking ( unclear what this means, needs clarification)
    • The notation [acb] is used for a specific range (needs clarification)
  • Percentage notation: always represent as a decimal between 0 and 1, e.g., 25% is equivalent to 0.25

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