A box plot marks summary values from smallest to largest. Its line inside the box marks the median, the middle of the ordered data. Follow that line to the labeled scale rather than calculating from the number of observations. The box's edges and whisker ends mark other values, so don't mistake one of them for the middle.
Hints
- Hint 1
The median is the middle of the values after they're put in order. A box plot has already found that middle for you, so you don't need to reconstruct the 20 ticket counts. Which mark inside the box shows it?
- Hint 2
On a horizontal box plot, read a mark's value from its position on the number line. Follow the line inside the box to the Tickets sold scale, not either edge or whisker end.
Step-by-step
Read the median line
Step 1Find the mark for the median
No Desmos needed. The box plot marks the median directly. A median is the middle of the values in order. In a box plot, the line inside the box marks that middle, not an edge of the box or a whisker end.
- Step 2
Read the ticket count
The inside line lines up with on the Tickets sold scale, so the median number of tickets sold is . Choice B.