Rounds a negative number to the nearest, more negative
number to a specified decimal place.
Usage
roundDown(x, dig)
Arguments
x
number to be rounded
dig
number of decimal places to be rounded
Details
roundDown is used to
round a negative Z-statistic critical value, which has (infinitely)
many significant digits, to the nearest dig decimal place
which is more extreme
than the critical value itself. This is done to preserve the
desired type I error level.