Stem-and-leaf displays and box plots

STA 111. Practice questions, not past papers.

Lessons

• Preserve individual observations
• Construct and interpret a box plot

Practice questions

1. The width of the box in a horizontal box plot represents what?

   Statistics study edition practice item Q026; Source: T14-17, T44

2. Which quantity determines the usual inner outlier fences?

   Statistics study edition practice item Q027; Source: T14-17, T44

3. In a modified box plot, a whisker usually ends at what?

   Statistics study edition practice item Q028; Source: T14-17, T44

4. What must accompany a stem-and-leaf display?

   Statistics study edition practice item Q029; Source: T14-17, T44

5. Q1=10 and Q3=18. Find the upper inner outlier fence. Give the value to 4 decimal places.

   Statistics study edition practice item Q030; Source: T14-17, T44

6. Q1=4 and Q3=12. Find the upper inner outlier fence. Give the value to 4 decimal places.

   Statistics study edition practice item Q031; Source: T14-17, T44

7. Q1=20 and Q3=30. Find the upper inner outlier fence. Give the value to 4 decimal places.

   Statistics study edition practice item Q032; Source: T14-17, T44

8. The distance from Q1 to Q3 is the _____ range.

   Statistics study edition practice item F012; Source: T14-17, T44

9. A stem-and-leaf display requires a _____ to show its numerical scale.

   Statistics study edition practice item F013; Source: T14-17, T44

Topic gap report