Coach woods made a comparison of geometry quiz scores in his 2nd and 4th period classes:

2nd period 4th period
13 13
13 14
12 and 13 16
15 14
standard 4.3 6.72

what can coach woods conclude about the comparison of quiz scores?
a)
the average score was lower for 4th period.
b)
the average score was greater for 4th period.
c)
there was less variation in scores for 4th period.