Statistical analysis vocabulary · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Words for describing data

Mathematics · Data & Statistics · ages 9-11
Name ______________________   Date ____________

  1. Which display uses slices of a circle to show parts of a whole?

    • A pie chart
    • A frequency table
    • A scatter graph

  2. Find the range of 4, 9, 3, 12, 7.

    Answer: ______________

  3. To find the mean of 4, 6, 8, 10, you first get a total of 28. What number should you divide 28 by?

    Answer: ______________

  4. How do you find the mean of a set of numbers?

    • Order all the values and choose the middle value
    • Add the values and divide by their count
    • Find the value that appears most often

  5. A scatter graph shows that higher sleep-hour values tend to go with higher test scores. What does the described pattern show?

    • No clear correlation in this graph
    • Positive correlation between the values
    • Proof that sleep caused the score changes

  6. A frequency table shows 2 pages on 1 day, 4 pages on 1 day and 6 pages on 2 days. What is the mean number of pages per day?

    Answer: ______________

  7. The mean of 4, 6, 8 is 6. Adding 0 to this data set raises the mean.

    Circle one:   True   False

  8. Scores are 4, 5, 6, 7, 38. Which claim compares their mean and median correctly?

    • Mean 6, median 12; the mean is near four scores
    • Mean 12, median 6; the median is near four scores
    • Mean 12, median 38; the median is near four scores
    • Mean 38, median 6; the mean is near four scores

  9. The mean of 5, 6, 6, 7 is 6. Mia adds 40 and says the mean falls. Which reply fits?

    • Yes; adding 40 makes the mean fall
    • No; adding 40 leaves the mean at 6
    • No; adding 40 makes the mean rise

  10. Find the median of 3, 3, 3, 3, 15.

    333315

    Answer: ______________

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Answer key

For grown-ups. Fold this page away before handing over the rest.

Words for describing data W1-mt_fmm-P17Vka-s1

  1. A pie chart · A pie chart divides a circle into slices representing parts of a whole.
  2. 9 · The largest value is 12 and the smallest is 3. The range is 12 - 3 = 9.
  3. 4 · There are four values, so divide the total by 4.
  4. Add the values and divide by their count · The mean is the total divided by the number of values.
  5. Positive correlation between the values · The values tend to rise together, which describes positive correlation. The pattern alone does not prove a cause.
  6. 4.5 · The daily values are 2, 4, 6, 6. Their total is 18 over four days, so the mean is 4.5.
  7. False · The added value 0 is below the old mean. The new mean is 18 divided by 4 = 4.5, which is lower.
  8. Mean 12, median 6; the median is near four scores · The total is 60, so the mean is 12. The middle value is 6. Four scores are between 4 and 7, near the median.
  9. No; adding 40 makes the mean rise · The value 40 is above the old mean of 6, so adding it raises the mean.
  10. 3 · There are five ordered values. The third value is the middle one, so the median is 3.
Worksheet · LightMySky