moe_ratio: Calculate the margin of error for a derived ratio
Description
Calculate the margin of error for a derived ratio
Usage
moe_ratio(num, denom, moe_num, moe_denom)
Arguments
num
The numerator involved in the ratio calculation (an estimate)
denom
The denominator involved in the ratio calculation (an estimate)
moe_num
The margin of error of the numerator
moe_denom
The margin of error of the denominator
Value
A margin of error for a derived ratio