Twenty autistic children in a communication therapy program are scored on the number of times in a given session that they initiate eye contact or direct a comment toward the primary caretaker. Here are their scores.
Number of Contacts Number of Children
8...................................... 1
6...................................... 1
5...................................... 1
4...................................... 2
3...................................... 4
2...................................... 7
1...................................... 4
a. Counting up from the bottom of the table, what is the ballpark median number of contacts?
b. Using the formula for a median, find the exact median number of contacts.