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Measures of Variability

Quiz by James Andrew Palacio

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10 questions
Show answers
  • Q1
    Sara noted the scores of 5 basketball games as 10, 15, 20, 15, and 20. What is the range of the scores?
    20
    5
    10
    15
    30s
  • Q2
    If the heights of five trees are 5 meters, 8 meters, 10 meters, 8 meters, and 7 meters, what is the variance of their heights?
    4.0
    3.2
    2.8
    3.5
    30s
  • Q3
    Tom recorded the number of books he read each month for 4 months as 3, 5, 2, and 4. What is the standard deviation of the number of books?
    3
    1.5
    1.12
    2.24
    30s
  • Q4
    Jenny measured the lengths of 6 fish in centimeters as 10, 15, 20, 15, 10, and 20. What is the average deviation of their lengths?
    5
    2.5
    3.33
    4.5
    30s
  • Q5
    Sam recorded the temperatures (in degrees Celsius) of 5 days as: 12, 15, 18, 15, and 20. What is the range of these temperatures?
    3
    6
    8
    5
    30s
  • Q6
    In a small survey, the number of books members of a book club read over a month were: 3, 7, 5, 2, and 4. What is the variance of the number of books read?
    2.2
    3.2
    2.8
    2
    30s
  • Q7
    Lisa scored the following points in five games: 10, 20, 15, 25, and 30. What is the standard deviation of her scores?
    6.5
    5.7
    8.2
    7.9
    30s
  • Q8
    What is the range of the following set of numbers: 8, 3, 15, 10, and 5?
    10
    5
    12
    7
    30s
  • Q9
    If a scientist measures the growth of a plant over 6 days and records the growth in inches as 2, 4, 4, 5, 3, and 6, what is the average deviation from the mean growth?
    0.85
    1.5
    2
    1.33
    30s
  • Q10
    Mary recorded the test scores of 6 students as 65, 70, 80, 75, 70, and 85. What is the standard deviation of these scores?
    8.2
    6.67
    7.5
    5.77
    30s

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