What Does It Do?
This function calculates the sample
population standard deviation of a list of values.
A sample population is used when the
list of values represents a sample of a population.
Syntax
=STDEV(Range1,Range2,Range3 through
to Range30)
Formatting
No special formatting is needed.
Example
The table below was used by a
company interested in buying a new machine to pack washing powder.
Three machines were short listed and
allow to run for a day.
At the end of the day four boxes of
soap powder were picked at random from the production of each machine.
The boxes were weighed and the
=STDEV() function used as these boxes only represented a sample of the complete
days production.
The machine with the smallest deviation was the
most consistent.Explanation of Formula:
This finds the lowest value: =MIN(H34:H36)
This finds the position of the
lowest value: =MATCH(MIN(H34:H36),H34:H36,0)
This looks down the Machine column
to
find the machine name: =INDEX(C34:C36,MATCH(MIN(H34:H36),H34:H36,0))
No comments:
Post a Comment