1
Q
Rainfall units
A
Millimetres (mm).
2
Q
Meaning of “tr” in rainfall
A
A trace amount <0.05 mm.
3
Q
How to treat “tr” in exams
A
As 0 or 0.025 mm — must state your assumption.
4
Q
Rainfall data type
A
Continuous (but many zeros).
5
Q
Rainfall distribution shape
A
Highly positively skewed.
6
Q
Why rainfall cannot be negative
A
Physical constraint — helps eliminate incorrect statistical models.
7
Q
Rainfall pattern in UK stations
A
Many zero days, occasional high values.
8
Q
Beijing rainfall pattern
A
Very dry in some months but very heavy rainfall in others.
9
Q
Jacksonville rainfall pattern
A
High and variable due to tropical climate.
