Answered by:
How t find the Mode(Most common number) in an Array?
Question

How do I find the mode of an array? I am completely lost. All I have so far is
Sub Mode
For a = 1 To Listsize
For j = 1 To maximum1
While Array[a] = Array[a+1]
counter = counter + 1
If Array[a]<> Array[counter] Then
Answer = Array[counter]
TextWindow.WriteLine("The Mode is " + Answer)
EndIf
EndWhile
If Array[a]<> Array[a+1] Then
TextWindow.WriteLine("There is no mode")
EndIf
EndFor
EndFor
EndSubAnd I am certain it is wrong.
Answers

Hello Arbucks,
How about this. I just tested it and it appears to work:
Sub Mode
Occurence = 0
Top = 0
TopOccurence = 0
X =0
Y =0
number[1] = 2
number[2] = 3
number[3] = 3
number[4] = 2
number[5] = 3
For X = 1 To Array.GetItemCount(number)
For Y = 1 To Array.GetItemCount(number)
If number[x] = number[y] Then
Occurence = Occurence + 1
EndIf
endfor
If Occurence > TopOccurence Then
Top = number[x]
TopOccurence = Occurence
EndIf
Occurence = 0
endfor
Textwindow.WriteLine("The MODE is: "+Top)
textwindow.WriteLine("Number of times it occurs: " +TopOccurence)
EndSub Proposed as answer by Ed Price  MSFTMicrosoft employee, Owner Wednesday, September 25, 2013 9:46 PM
 Marked as answer by Nonki TakahashiModerator Wednesday, October 2, 2013 2:08 AM

I would:
1. sort the array ascending or descending
eg. {1,1,1,2,3,3,3,3,3,4,4,5,5,5,5,6,7,7,7,7,7,7,7,7,8,8,8,9,9}
2. loop through the array from Index 1 to last1,
while comparing every value with the next one, next one, .. until it's different (and counting equals into a 2nd array)
3. take the maximum then of the 2nd array = most common num
 Proposed as answer by Ed Price  MSFTMicrosoft employee, Owner Wednesday, September 25, 2013 9:46 PM
 Marked as answer by Nonki TakahashiModerator Wednesday, October 2, 2013 2:08 AM

How about this?
for I= 1 To 2000
Dat[I]= Math.GetRandomNumber(1000)/10 ' only data making ##.#
EndForFor i=1 To 2000
J= math.Round(Dat[i])
LinearDat[J]=LinearDat[J]+1 ' frequency count up
EndForGraphicsWindow.BackgroundColor="Lightcyan"
GraphicsWindow.PenColor="Red"
GraphicsWindow.PenWidth=5
GraphicsWindow.DrawRectangle(50,50,500,400)
For I=1 To 8
GraphicsWindow.DrawLine(50,50+50*(i1),40,50+50*(i1))
EndFor
min=100
max=0
For i=1 To 100
GraphicsWindow.DrawLine(50+i*5,450,50+i*5,450 10*LinearDat[i]) ' graph
If LinearDat[i]< min Then
min=LinearDat[i]
ElseIf max <LinearDat[i] then
max=LinearDat[i]
EndIf
EndFor
TextWindow.WriteLine(min+ " : "+max)For j=min To max
For i=1 To 100
If LinearDat[i]=J Then
mode[j]=mode[j]+i+";"
endif
EndFor
TextWindow.WriteLine("Frequency "+j+" = "+mode[j])
EndFor Proposed as answer by Ed Price  MSFTMicrosoft employee, Owner Wednesday, September 25, 2013 9:46 PM
 Marked as answer by Nonki TakahashiModerator Wednesday, October 2, 2013 2:08 AM
All replies

Hello Arbucks,
How about this. I just tested it and it appears to work:
Sub Mode
Occurence = 0
Top = 0
TopOccurence = 0
X =0
Y =0
number[1] = 2
number[2] = 3
number[3] = 3
number[4] = 2
number[5] = 3
For X = 1 To Array.GetItemCount(number)
For Y = 1 To Array.GetItemCount(number)
If number[x] = number[y] Then
Occurence = Occurence + 1
EndIf
endfor
If Occurence > TopOccurence Then
Top = number[x]
TopOccurence = Occurence
EndIf
Occurence = 0
endfor
Textwindow.WriteLine("The MODE is: "+Top)
textwindow.WriteLine("Number of times it occurs: " +TopOccurence)
EndSub Proposed as answer by Ed Price  MSFTMicrosoft employee, Owner Wednesday, September 25, 2013 9:46 PM
 Marked as answer by Nonki TakahashiModerator Wednesday, October 2, 2013 2:08 AM

I would:
1. sort the array ascending or descending
eg. {1,1,1,2,3,3,3,3,3,4,4,5,5,5,5,6,7,7,7,7,7,7,7,7,8,8,8,9,9}
2. loop through the array from Index 1 to last1,
while comparing every value with the next one, next one, .. until it's different (and counting equals into a 2nd array)
3. take the maximum then of the 2nd array = most common num
 Proposed as answer by Ed Price  MSFTMicrosoft employee, Owner Wednesday, September 25, 2013 9:46 PM
 Marked as answer by Nonki TakahashiModerator Wednesday, October 2, 2013 2:08 AM

How about this?
for I= 1 To 2000
Dat[I]= Math.GetRandomNumber(1000)/10 ' only data making ##.#
EndForFor i=1 To 2000
J= math.Round(Dat[i])
LinearDat[J]=LinearDat[J]+1 ' frequency count up
EndForGraphicsWindow.BackgroundColor="Lightcyan"
GraphicsWindow.PenColor="Red"
GraphicsWindow.PenWidth=5
GraphicsWindow.DrawRectangle(50,50,500,400)
For I=1 To 8
GraphicsWindow.DrawLine(50,50+50*(i1),40,50+50*(i1))
EndFor
min=100
max=0
For i=1 To 100
GraphicsWindow.DrawLine(50+i*5,450,50+i*5,450 10*LinearDat[i]) ' graph
If LinearDat[i]< min Then
min=LinearDat[i]
ElseIf max <LinearDat[i] then
max=LinearDat[i]
EndIf
EndFor
TextWindow.WriteLine(min+ " : "+max)For j=min To max
For i=1 To 100
If LinearDat[i]=J Then
mode[j]=mode[j]+i+";"
endif
EndFor
TextWindow.WriteLine("Frequency "+j+" = "+mode[j])
EndFor Proposed as answer by Ed Price  MSFTMicrosoft employee, Owner Wednesday, September 25, 2013 9:46 PM
 Marked as answer by Nonki TakahashiModerator Wednesday, October 2, 2013 2:08 AM