For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is
A)N/(m+l)
B)m/(N+l)
C)m/N
D)(N+l)/m

Question

Quizplus · Accepted Answer

The correct formula for calculating the return period for an annual flood series arranged in descending order of magnitude is given by (N+1)/m, where N is the total number of data points and m is the position of the magnitude in the ordered list.

For an Annual Flood Series Arranged in Descending Order of Magnitude