What is the class size? *
a.3
b.4
c.5
d.6
What is the class mark for the class 19-21?
a.18
b.19
c.20
d.21
What are the boundaries for the class 28-30?
a.27.5 and 30.5
b.27.5 and 31.5
c.28.5 and 30.5
d.28.5 and 31.5
How many days were more than 21 nurses are on duty?
a.26
b.25
c.24
d.23
How many days were at most 27 nurses are on duty?
a.13
b.18
c.23
d.28​