We are left having to make some guesses, a consequence of your not having provided adequate information.
Can we guess that s is intended to be standard deviation of a normal distribution? In which case, all you need to do is google for the relationship between s (or the more standard σ symbol) and "variance".
Too easy. 
We are left having to make some guesses, a consequence of your not having provided adequate information.
Can we guess that s is intended to be standard deviation of a normal distribution? In which case, all you need to do is google for the relationship between s (or the more standard σ symbol) and "variance".
Too easy.
