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Class 11

Statistics, Course Quiz

Ten questions across the whole Statistics course. Pick one answer for each.

10 questions, one mark each. 6 to pass. Suggested time: 20 minutes. Your answers are not recorded.

  1. Find the range of 7,15,3,22,107, 15, 3, 22, 10.
  2. Find the mean deviation about the mean of 1,2,3,4,51, 2, 3, 4, 5.
  3. About which central value is the mean deviation smallest?
  4. Find the median of 4,9,2,7,54, 9, 2, 7, 5.
  5. Find the variance of 1,2,3,4,5,6,71, 2, 3, 4, 5, 6, 7.
  6. What is the variance of 5,5,55, 5, 5?
  7. Every observation is multiplied by 33. The standard deviation
  8. Which formula gives the variance of x1,…,xnx_1, \ldots, x_n?
  9. The coefficient of variation is defined as
  10. Find the variance of 10,20,3010, 20, 30.
Unanswered questions are marked wrong.

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