How is the mean annual rainfall of a given place calculated using records for 35 years?
-
A.
by summing the yearly average rainfall figure and dividing by 35 -
B.
by summing the yearly total rainfall figures dividing by 35 -
C.
by summing the yearly total rainfall figures for 35 years and dividing by 12 -
D.
by finding the average between the figures for the wettest and the the direst years and multiplying by 35 -
E.
by plotting the rainfall figures on a graph and finding the midpoint