Measures of Central Tendency Quiz
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Questions and Answers

What is the mean of the data set {1,3,6,7,2,3,5} with 7 observations and a sum of 27?

  • $4.5$
  • $3.9$ (correct)
  • $4$
  • $3.85$

    • In the frequency distribution table, what is the total number of children?

  • 1339 (correct)
  • 3526
  • 1466
  • 2.6

    • What is the median of the data set {5, 8, 9, 10, 28}?

  • 9 (correct)
  • 28
  • 10
  • 5

    • What is the median of the data set {2, 6, 17, 19, 20, 21, 27}?

    <p>19.5</p> Signup and view all the answers

    What was the median of Nick's quiz scores during the first marking period?

    <p>91</p> Signup and view all the answers

    What is the total of the Frequency*Y (fY) column in the frequency distribution table?

    <p>3526</p> Signup and view all the answers

    What is the median of the given swim times: 2.6, 7.2, 3.5, 9.8, and 2.5 minutes?

    <p>3.5 minutes</p> Signup and view all the answers

    Which of the following statements about the mode is true?

    <p>There can be multiple modes in a dataset.</p> Signup and view all the answers

    Given the ages: 34, 24, 56, 52, 21, 44, 64, 34, 42, 46, what is the mean age?

    <p>41.7 years</p> Signup and view all the answers

    What is the mode of the following scores: 7, 13, 18, 24, 9, 3, 18?

    <p>18</p> Signup and view all the answers

    If the median of the ages 21, 24, 34, 34, 42, 44, 46, 52, 56, 64 is $\frac{42 + 44}{2}$, what is the value of the median?

    <p>43 years</p> Signup and view all the answers

    Which of the following is the most common measure of central location in a sample?

    <p>Arithmetic Mean</p> Signup and view all the answers

    What does the Greek letter '' (sigma) represent in the formulas provided?

    <p>The sum of all the scores</p> Signup and view all the answers

    What is the formula for calculating the sample mean?

    <p>$ar{X} = rac{1}{n} ext{sum } x_i$</p> Signup and view all the answers

    What is the formula for calculating the population mean?

    <p>$ar{X} = rac{ ext{sum } x_i}{N}$</p> Signup and view all the answers

    What is the value of the mean swimming time, rounded to the nearest tenth?

    <p>5.1 minutes</p> Signup and view all the answers

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

    <p>Standard Deviation</p> Signup and view all the answers

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