Test Your Understanding

Would you like to know how well you've mastered the concepts of Descriptive Statistics? Then take this short online quiz to assess your understanding. It's not for a grade, so don't worry about choosing the wrong value. If you reload the document, you will get a slightly different version of the test.

  1. Consider the histogram shown in the photo. Which measure of center is probably the best to use for this data?
    Median
    Range
    Mean
  2. Which of the following statistics use all the data values?
    Variance
    Mode
    Median
  3. Which of the following is a problem with using the variation as our primary measure of variance?
    It does not take the number of values into consideration
    It does not use all of the data
    The units are not the same as the original data
  4. You have data that consists of velocities; which of the following is probably the best measure of center to use?
    Harmonic mean
    Quadratic mean
    Variance
  5. Which rule specifically describes the standard deviation for a bell shaped distribution?
    Range rule of thumb
    Empirical rule
    Chebyshev's rule
  6. Which of the following statements is NOT true about the standardized score?
    The standard deviation will be 1.
    The mean will be zero.
    The mean is the same as the original mean.
  7. Which one of the following is NOT part of the five number summary?
    20th percentile
    Median
    3rd Quartile
  8. Which of the following statements is true about outliers?
    Outliers are numbers in the middle of the data.
    Extreme outliers are values in the top 5% or bottom 5% of the data.
    Extreme outliers are more than 3 times the interquartile range beyond the quartiles.

Go to the Descriptive Statistics page.
Go to the James Jones ICTCM page.