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Manuals/calci/DSTDEV (view source)

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<div id="6SpaceContent" class="zcontent" align="left"> <font color="#484848"><font face="Arial, sans-serif"><font size="2">'''DSTDEV'''</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">(</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">'''db'''</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">,</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">'''fld'''</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">,</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">'''cri'''</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2">)</font></font></font>
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<div style="font-size:30px">'''DSTDEV (Array,Field,Criteria)'''</div><br/>
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where,
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*<math>Array</math> is the range of cells that makes up the list or database
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*<math>Field</math> shows which column is used in the function and
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*<math>Criteria</math> is the range of cells that contains the specified criteria.
 +
**DSTDEV(), estimates the standard deviation based on a sample of selected database entries.
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<font color="#484848"><font face="Arial, sans-serif"><font size="2">'''where db'''</font></font></font><font color="#484848"><font face="Arial, sans-serif"><font size="2"> is the range of cells that makes up the list or database,</font></font></font>
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== Description ==
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<font color="#484848"><font face="Arial, sans-serif"><font size="2">fld shows which column is used in the function and </font></font></font>
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DSTDEV (Array,Field,Criteria)
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<font color="#484848"><font face="Arial, sans-serif"><font size="2">cri   is the range of cells that contains the conditions that we specify. </font></font></font>
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*Standard deviation shows the variation of data points from the average value.
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*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.
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*A <math>Field</math> argument can be expressed as "Salary" (a column name) or 3(position of the column).
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*<math>Criteria</math> can be any range on the Calci with minimum of one column and at least one row indicating the condition.
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*The <math>Criteria</math> columns should not overlap the list of data.
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</div>
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== Examples ==
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----
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Consider the following table with Employee details as input to DSTDEV function.
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<div id="1SpaceContent" class="zcontent" align="left"> <font color="#484848"><font face="Arial, sans-serif"><font size="2">It calculates the standard deviation of a population based on a sample by using the numbers in a column of a list or database that match conditions we specify.</font></font></font></div>
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----
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<div id="12SpaceContent" class="zcontent" align="left"><div class="ZEditBox" align="left">
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DSTDEV
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</div></div>
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----
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<div id="8SpaceContent" class="zcontent" align="left"> 
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#666666"><font face="Arial, sans-serif"><font size="2">Let's see an example</font></font></font>]
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">Let's see an example</font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">C1 C2 C3 </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R1 Name Age Salary </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R2 &lt;30 </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R3 &gt;40 &gt;5000</font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R4 Name Age Salary</font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R5 John 34 5500 </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R6 Bill 35 6500 </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R7 Clark 29 7000 </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R8 Bob 43 9000</font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R9 Susan 37 4000</font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">R10 Jill 45 8000 </font>]
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<font color="#0000ff"><br /></font>
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[javascript:ToggleDiv('divExpCollAsst_4') <font color="#0000ff">I.e =DSTDEV(C1R4:C3R10,”Age”,C2R1:C3R3) is 8.7178</font>]
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</div>
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----
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<div id="10SpaceContent" class="zcontent" align="left"><div class="ZEditBox" align="justify">Syntax </div><div class="ZEditBox"><center></center></div></div>
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----
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<div id="3SpaceContent" class="zcontent" align="left"><div class="ZEditBox" align="justify">Examples </div></div>
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----
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<div id="11SpaceContent" class="zcontent" align="left"><div class="ZEditBox" align="justify">Description </div></div>
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----
   
<div id="2SpaceContent" class="zcontent" align="left">
 
<div id="2SpaceContent" class="zcontent" align="left">
    
{| id="TABLE3" class="SpreadSheet blue"
 
{| id="TABLE3" class="SpreadSheet blue"
 
|- class="even"
 
|- class="even"
−
| class="   " |
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| class="sshl_f" |  
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<div id="2Space_Copy" title="Click and Drag over to AutoFill other cells."></div>
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| class="sshl_f" | A
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| class="   " | Column1
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| class="sshl_f" | B
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| class="   " | Column2
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| class="sshl_f" | C
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| class=" " | Column3
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| class="sshl_f" | D
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| class=" " | Column4
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|- class="odd"
 
|- class="odd"
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| class=" " | Row1
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| class="sshl_f" | 1
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| class="sshl_f   " | Name
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| class="sshl_f" | '''Name'''
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| class="sshl_f " | Age
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| class="sshl_f" | '''Age'''
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| class="sshl_f" | Salary
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| class="sshl_f" | '''Salary'''
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| class="sshl_f" | 8.7178
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| class="sshl_f" | '''Age'''
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|- class="even"
 
|- class="even"
−
| class=" " | Row2
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| class="sshl_f" | 2
 
| class="sshl_f" |
 
| class="sshl_f" |
−
| class="sshl_f" | &lt;30
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| class="sshl_f" | &lt;40
−
| class="sshl_f" |
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| class="sshl_f" | &gt;8000
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| class="sshl_f         SelectTD SelectTD" |
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| class="sshl_f" | &gt;32
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<div id="2Space_Handle" title="Click and Drag to resize CALCI Column/Row/Cell. It is EZ!"></div><div id="2Space_Copy" title="Click and Drag over to AutoFill other cells."></div>
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|- class="odd"
 
|- class="odd"
−
| Row3
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| class="sshl_f" | 3
 
| class="sshl_f" |
 
| class="sshl_f" |
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| class="sshl_f " | &gt;40
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| class="sshl_f" | &gt;30
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| class="sshl_f   " | &gt;5000
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| class="sshl_f" |  
 
| class="sshl_f" |
 
| class="sshl_f" |
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|- class="even"
 
|- class="even"
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| Row4
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| class="sshl_f" | 4
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| class="sshl_f       " | Name
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| class="sshl_f" | '''Name'''
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| class="sshl_f" | Age
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| class="sshl_f" | '''Age'''
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| class="sshl_f" | Salary
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| class="sshl_f" | '''Salary'''
 
| class="sshl_f" |
 
| class="sshl_f" |
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|- class="odd"
 
|- class="odd"
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| class=" " | Row5
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| class="sshl_f" | 5
 
| class="sshl_f" | John
 
| class="sshl_f" | John
 
| class="sshl_f" | 34
 
| class="sshl_f" | 34
 
| class="sshl_f" | 5500
 
| class="sshl_f" | 5500
 
| class="sshl_f" |
 
| class="sshl_f" |
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|- class="even"
 
|- class="even"
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| class="sshl_f" | Row6
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| class="sshl_f" | 6
 
| class="sshl_f" | Bill
 
| class="sshl_f" | Bill
 
| class="sshl_f" | 35
 
| class="sshl_f" | 35
 
| class="sshl_f" | 6500
 
| class="sshl_f" | 6500
−
| class="sshl_f " |
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| class="sshl_f" |
 +
 
 
|- class="odd"
 
|- class="odd"
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| class="sshl_f" | Row7
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| class="sshl_f" | 7
 
| class="sshl_f" | Clark
 
| class="sshl_f" | Clark
 
| class="sshl_f" | 29
 
| class="sshl_f" | 29
 
| class="sshl_f" | 7000
 
| class="sshl_f" | 7000
 
| class="sshl_f" |
 
| class="sshl_f" |
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|- class="even"
 
|- class="even"
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| class="sshl_f" | Row8
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| class="sshl_f" | 8
 
| class="sshl_f" | Bob
 
| class="sshl_f" | Bob
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| class="sshl_f" | 43
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| class="sshl_f" | 45
 
| class="sshl_f" | 9000
 
| class="sshl_f" | 9000
 
| class="sshl_f" |
 
| class="sshl_f" |
 +
 
|- class="odd"
 
|- class="odd"
−
| class="sshl_f" | Row9
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| class="sshl_f" | 9
 
| class="sshl_f" | Susan
 
| class="sshl_f" | Susan
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| class="sshl_f " | 37
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| class="sshl_f" | 37
 
| class="sshl_f" | 4000
 
| class="sshl_f" | 4000
 
| class="sshl_f" |
 
| class="sshl_f" |
 +
 
|- class="even"
 
|- class="even"
−
| class="sshl_f" | Row10
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| class="sshl_f" | 10
 
| class="sshl_f" | Jill
 
| class="sshl_f" | Jill
 
| class="sshl_f" | 45
 
| class="sshl_f" | 45
−
| class=" " | 8000
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| class="ssh1_f" | 8000
 
| class="sshl_f" |
 
| class="sshl_f" |
 
|}
 
|}
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<div align="left">[[Image:calci1.gif]]</div></div>
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=DSTDEV(A4:C10,"Age",B1:B3)  : Calculates the standard deviation for 'Age' column <br>in the range A4 to C10, for the cells with 40>Age>30. <br />Returns '''5.214829282387338''' as a result.
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----
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=DSTDEV(A4:C10,3,D1:D2)  : Calculates the standard deviation for 'salary' <br>in the range A4 to C10, for the cells with Age>32. <br />Returns '''1981.161275615895''' as a result.
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==Related Videos==
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{{#ev:youtube|d7HJqNbPBvg|280|center|DSTDEV}}
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== See Also ==
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*[[Manuals/calci/DSTDEVP| DSTDEVP]]
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==References==
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*[http://en.wikipedia.org/wiki/Standard_deviation Standard deviation]
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*[[Z_API_Functions | List of Main Z Functions]]
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*[[ Z3 |  Z3 home ]]
Devika
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