Custom formula needed in our netsuite

Project Description

I want to calculate the standard deviation as well as a formula to calculate how many standard deviations one value is from the mean. Those two formulas. I would like those to be formulas that could be used on any P&L that we make.

In other words can you create a custom formula that could be integrated into our netsuite environment.

I just want the formula for:
1. standard deviation (it will be comparing 4 months worth of revenue and expenses)

2. How many standard deviations away from the average (comparing a specific month vs. the average)