Manuals/calci/DSTDEV

DSTDEV (Array,Field,Criteria)

where,

• $Array$ is the range of cells that makes up the list or database
• $Field$ shows which column is used in the function and
• $Criteria$ is the range of cells that contains the specified criteria.
  • DSTDEV(), estimates the standard deviation based on a sample of selected database entries.

Description

DSTDEV (Array,Field,Criteria)

• Standard deviation shows the variation of data points from the average value.
• If data points are close to mean value, a low standard deviation is observed. If data points are spread out from the mean value, a high standard deviation is observed.
• A $Field$ argument can be expressed as "Salary" (a column name) or 3(position of the column).
• $Criteria$ can be any range on the Calci with minimum of one column and at least one row indicating the condition.
• The $Criteria$ columns should not overlap the list of data.

Examples

Consider the following table with Employee details as input to DSTDEV function.

	A	B	C	D
1	Name	Age	Salary	Age
2		<40	>8000	>32
3		>30
4	Name	Age	Salary
5	John	34	5500
6	Bill	35	6500
7	Clark	29	7000
8	Bob	45	9000
9	Susan	37	4000
10	Jill	45	8000

=DSTDEV(A4:C10,"Age",B1:B3)   : Calculates the standard deviation for 'Age' column 
in the range A4 to C10, for the cells with 40>Age>30. 
Returns 5.214829282387338 as a result.
=DSTDEV(A4:C10,3,D1:D2)   : Calculates the standard deviation for 'salary' 
in the range A4 to C10, for the cells with Age>32. 
Returns 1981.161275615895 as a result.

Related Videos

DSTDEV

See Also

• DSTDEVP

References

• Standard deviation

• List of Main Z Functions

• Z3 home