Syntax: CSTD(argumentlist, C)
argumentlist = any combination of cells or ranges
C = a constraint expression
CSTD returns the standard deviation (N weighting) of its arguments that satisfy the constraint C. Blank cells and cells containing strings are not counted.
Examples:
CSTD(A1..A3, #
10) = 2.6246693, where A1..A3 are 1, 2,
and 7
CSTD(Y1..Y5, #
25) = 6.6833126, where Y1..Y5 = 22, 24,
29, 34, and 45
Excel function: N/A