roundDown: Round down a negative number
In factorial2x2: Design and Analysis of a 2x2 Factorial Trial

Description Usage Arguments Details Examples

Rounds a negative number to the nearest, more negative number to a specified decimal place.

1	roundDown(x, dig)

`x`	number to be rounded
`dig`	number of decimal places to be rounded

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.