Calculating Median, Range, Variance and Standard Deviation Quiz
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Questions and Answers

What is the formula for calculating the range?

  • Standard deviation
  • Sum of all values
  • Median value
  • Largest value - Smallest value (correct)

    • How is the median defined?

  • The middle value in a set of data arranged from smallest to largest (correct)
  • The sum of all values divided by the number of values
  • Halfway between the smallest and largest value
  • The most frequently occurring value

    • What does the formula for sample standard deviation involve?

  • Difference between mean and median
  • Difference between each value and the mean squared (correct)
  • Difference between largest and smallest value
  • Sum of all values squared

    • What measure is indicated by a negative skewness value?

    <p>Moderate negative skewness</p> Signup and view all the answers

    How is the variance calculated?

    <p>(Difference between each value and the mean) squared and then averaged</p> Signup and view all the answers

    What does a larger standard deviation indicate?

    <p>Values are more spread out from the mean</p> Signup and view all the answers

    What does a smaller range suggest about a dataset?

    <p>Values are closer to each other</p> Signup and view all the answers

    What does the sample standard deviation measure in a set of data?

    <p>The spread of data points around the mean</p> Signup and view all the answers

    In the context provided, what does the range of a dataset represent?

    <p>The difference between the largest and smallest values</p> Signup and view all the answers

    What is the skewness value in this dataset indicative of?

    <p>A moderate positive skewness</p> Signup and view all the answers

    How does the standard deviation change if the data points are more spread out?

    <p>It increases</p> Signup and view all the answers

    Which statistical measure represents the middle value in a dataset arranged from smallest to largest?

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

    What does a negative skewness value indicate about the dataset?

    <p>It is skewed to the left</p> Signup and view all the answers

    How is the range of a dataset calculated?

    <p>By subtracting the smallest value from the largest value</p> Signup and view all the answers

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