Hollyhocks are tall, slender, flowering plants that grow in many areas of the U.S. Here are the heights (in inches) of hollyhocks that are growing in a park: $10$, $39$, $43$, $45$, $46$, $47$, $48$, $48$, $49$, $50$, and $52$.  

1. Find the median.

   Hint (a):

   Since the data is already listed in ascending order, find the middle number.

   Answer (a):

   $47$

2. Find the quartiles.

   Hint (b):

   Find the medians of the upper half and the lower half of the ordered set of data.

3. Make a box plot of the data.

   Answer (c):