Worked examples
Two examples
Example 1
A box plot runs from 20 to 70, with the box from 35 to 55 and the middle line at 45. What is the median?
- The line inside the box is the median.
Answer: 45
Example 2
Same plot. What is the interquartile range?
- The width of the box: 55 − 35.
Answer: 20
Where this is taught: Quiz 38: Reading Graphs, “Read the furniture first”
The drill
Ten problems
How many:
Type each answer, then press Check my answers at the bottom. Commas in large numbers are fine.Write each answer on the line. The answer key, with the reasoning, is on the last page.