1)

Parts (a),(b) and (c):
Parts (d),(e) and (f):
2)

Parts (a) and (b):
Part (c):
3)

Parts (a) and (b):
Parts (c),(d) and (e):
4)

Parts (a) and (b):
Parts (c),(d) and (e):
Parts (f):
Any of these comments: Use the median since the data is skewed or less affected by outliers / extreme values.
Parts (g):
Any one of these comments: If the data are symmetrical or skewness is zero or normal/uniform distribution.
5)

Part (a):
One of these answers: Time is a continuous variable or data is in a grouped frequency table.
Part (b):
Area is proportional to frequency
Parts (c) and (d):
6)

7)

Part (a):
Part (b):
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