quiz-04-histo.txt, cr 06 feb 2015 by rha and ht on pro

scoring: one point for each question (max = 5)
histogram:

5	*** (3)

4	**(2)

3	******* (7)

2	***** (5)

1	*** (3)

0	******(6)

number = 26
median = 2.5
average = 2.2

end