Calculates the population standard deviation of the values in a data set created from a condition.
Syntax:
DSTDP( range, condition )
Returns the population standard deviation of all the values in the range for which the corresponding condition is satisfied.
Formula:
DSTDP, σ = √ ( ( n⋅i ∑1n (xi2) − (i ∑1n xi)2 ) ∕ n2 )
where n is the number of selected values and xi is the i‑th value from the selection.
This is the square root of the population variance of the selected values.
Example:
DSTDP(A1:A15, B1:B15>0)
returns the population standard deviation of the cells in the range A1:A15
whose equivalents in the range B1:B15
are greater than zero.
See DAVG for more examples of how to use the condition to control which cells are included.