MC W/Random Number Generation
May 4, 2006
I get the following error whenever I try running a Monte Carlo simulation with iterations in excess of 64000 (The MC simulation calls the 'NormSInv' worksheet function at least once per iteration, and the argument to the 'NormSInv' function is always a standard normal RANDOM number also generated by Excel VBA): Run-time error '1004': Unable to get the NormSInv property of the WorksheetFunction class
Why do I inevitably encounter this error ONLY when the number of iterations exceeds 64000, for instance? Simulations with iterations < 64000 run smoothly without a glitch.
View 2 Replies
ADVERTISEMENT
Jul 29, 2009
I understand how RAND and RANDBETWEEN work, but have a slightly more complicated random number generation problem that requires a number that isn't solely between two numbers.
I have one cell that is randomly generating a number between 0 and 350 (we'll call this value A) and another randomly generating a number between 0 and 15 (value B). Then, I have a third cell (value C) that equals 15 minus B. Where I am having trouble is with a fourth cell (value D). This cell I want to have randomly generate a number between 0 and 350 but it needs to be D less than the value in A or C more than the value in A. Is there an advanced random number generation technique that can solve this?
View 12 Replies
View Related
Nov 24, 2011
Been trying to think of a way to get random numbers 1 to 36 generated without repeating in the same column, however also getting it to perform the same opertaion in 9 more columns (B:J) without the same number appearing in the same row.
example
1 2 5 4
2 5 3 1
3 4 1 5
4 1 2 3
5 3 4 2
Unsure if this is possible, have created a basic script for random number generation but have no clue how to expand across columns.
View 9 Replies
View Related
Oct 1, 2008
it is possible to generate a completely random number generation in excel?
Other than using the rand() function and then sorting by top or bottom (as then have affected the sample by choosing which direction it is sorted).
And the randbetween() function changes everytime you modify a cell.
View 9 Replies
View Related
Oct 4, 2005
I have three columns A,B&C In the column A Iwill generate random
numbers between 40&50, In the Column B I will generate random numbers
between 35&45, The column C is the sum of Column A&B(i.e. C=A+B) but I
the sum should be between 83&88. I need acondition such that the random
numbers generated in Column A&B Should satisfy the Column C(A+B)
condition sdatisfying the A&B columns condition.
View 11 Replies
View Related
Oct 24, 2012
The code below generates numbers in the range (A2: H2)
View 4 Replies
View Related
May 8, 2006
I'm trying to write a code that will generate random numbers and no number appears more than onece.
For I = 0 To 3
For J = 0 To I
Do
n = Int(4 * Rnd) + 1 'random number generated
Array1(I) = n 'random number settled in an array
If (I = I - J) Then 'checking for the same place in array
numsOK = True
Else
If Array1(I) = Array1(I - J) Then ' comparing two different places in an array
numsOK = False
Else
numsOK = True
End If
End If
Loop Until numsOK = True
Next J
Next I
View 9 Replies
View Related
Sep 20, 2008
I would like to generate a random value using a skewed normal distribution. For inputs I have the sample mean, standard deviation, and skewness. I would like to find a way to generate numbers randomly that would fit the skewed normal distribution described by the inputs.
Some information about skewed normal distributions can be found here: ...
View 5 Replies
View Related
Jan 1, 2008
I want to generate a random number based in a poisson and i use this
Application.Run "ATPVBAEN.XLA!Random", ActiveSheet. Range("$B$2"), 1, 1, 5 , , 35
But i want to save the number in a dim single variable called N. I try to put N where i have write ActiveSheet.Range("$B$2") and do N=Application.Run ...
But it doesn't work.
View 5 Replies
View Related
Apr 26, 2007
I have multiple users that use a spreadsheet to enter data. I am trying to figure a way to assign a case number to each row of data that is entered. I cannot really do sequential numbers, because often people are entering data at the same time, and often these people are working offline.
So I was thinking if I could somehow have the case number be a few letters (to identify a specific person) and then a series of numbers (to signify which case number it is). That would allow multiple users to enter data offline simultaneously without having to worry that the case numbers are going to be the same. Maybe I could use the Application.UserName and somehow parse it to give me the letters (perhaps Intials or something), and then somehow apply sequential numbers to that...
for instance, JJH00001, JJH00002, etc
View 9 Replies
View Related
Oct 7, 2009
I m trying to achieve is generating ref numbers automatically.
I have attached an example.
In Cell A if the user choose yes it gives a ref number. The trouble im having is that say in cell A5 a Yes is choosen at a later date, it will throw the numbers out of order and the ref numbers get mixed up, there any way of stopping this from happening or any function that prevents this from happening
View 14 Replies
View Related
Mar 29, 2002
You must install "Analysis TookPak-VBA" before doing this; check in your Excel's Tools/Add-Ins menu. Paste this long function (see below) in an Excel's worksheet (any cell) and press F9 (calculate) until you see at least 2 identical numbers. Real life's lottery does not have repeating numbers. I can disable this repetition by using cells relation but I want to use just one (1) cell. Any expert wants to challenge? If not, you can use VBA. But it still requires one (1) line of codes.
=RANDBETWEEN(1,50)&" "&RANDBETWEEN(1,50)&" "&RANDBETWEEN(1,50)&" "&RANDBETWEEN(1,50)&" "&RANDBETWEEN(1,50)&" "&RANDBETWEEN(1,50)
View 9 Replies
View Related
Dec 10, 2006
How do I make a row of 5 random numbers in A2:A6 that are not the same as each other. It's basically for a Bingo card. I have a formula that can calculate the random numbers =INT(RAND()*15)+1 under the B's for example, but I can't seem to figure out how to make it so they are not the same.
View 14 Replies
View Related
Oct 13, 2009
How can I make sure that I can generate random numbers that don't repeat using the rnd function in VBA.
View 14 Replies
View Related
Jan 3, 2014
I have build a system that needs a lot of random numbers generated to work.
I have used what I thought would work to generate me these numbers like this example:
VB:
Lastrow = ThisWorkbook.Sheets("RPlay").Range("A" & Rows.Count).End(xlUp).Row
RPlayerNum = Int((Lastrow - 2 + 1) * Rnd + 2)
This would generate a random number into RPlayerNum variable, based on the list in sheet RPlay, missing off row 1 as the header.
However we have noticed a massive flaw in this code.... It works as long as the excel file is open, each time run it gives a different random number. However if you close the excel file and open it, then run it, it ALWAYS gives the same number first run, every time.
View 3 Replies
View Related
May 18, 2014
How to generate random 50 number with 10 group..
View 6 Replies
View Related
Jan 3, 2014
Is it possible to use the =randbetween() function to generate a random number between 0.8 and 1.2.
View 4 Replies
View Related
Sep 21, 2009
If I generate a random number in cell A1 ranging from 1 to 3. Can I count how many times the result is equal to 2 if I was to run it 100 times and then show the results in cell A3.
View 9 Replies
View Related
May 5, 2009
I have a formula to generate a random number between 0 and 10.
View 10 Replies
View Related
Feb 5, 2007
I need a macro that will select a random number between 1 and 6. ie select the number of a dice. It needs to input 1 random value into one cell and another random value into another. Like the dice values of a monopoly game.
View 9 Replies
View Related
Oct 11, 2007
is if there is a way to generate random numbers between 0001 and 9999. I always need to always have 4 digits. The first couple of numbers can be 0 so that I can maximize the number of variations.
View 9 Replies
View Related
Apr 19, 2006
random number selection...
i have a list of 200 items (rows) and i would like to "randomly" select 30 of them...(next month i will get another 200...)
View 3 Replies
View Related
Jun 2, 2006
I am using the data analysis add-in to generate a random number (using the random number generation) using a normal distribution. The problem is, i want it to recalculate these numbers every time the worksheet is recalculated but the numbers seem to be values only.
View 2 Replies
View Related
Nov 28, 2006
i have worked in access using vba procedures. i can easily create a form in access that generates a random integer number between 0 and 20 and the user will guess the number between 1 to 20 if the random number is 16 and the user enters 14 the program will display a msg box saying too low or too high. here is the code .
Option Explicit
Private Const MAX = 20
Private Const MIN = 1
Private iKey As Integer
Private lTries As Long
Private Function Random() As Integer
Random = CInt(Int((MAX - MIN + 1) * Rnd() + MIN))
End Function
Private Sub cmdGuess_Click()
Dim lGuess As Long
now i have to do the same thing in excel create a program that will ask the user to enter numbers between 0 to 20 and see if the random number and user guess is same or not. but i have never worked in excel using vba procedures how can i achieve the same thing in excel using a vba procedures.
View 3 Replies
View Related
Dec 20, 2006
I have a random number generater but it creates a new random number whenever I recalculate the sheet or enter something in another cell. I would like it to choose a random number once and not do it again until a condition, specificaly a date, is met.
View 6 Replies
View Related
Aug 29, 2007
how to put time delay on my program?
like it will generate again every 9 minute?
Private Sub CommandButton1_Click()
Dim x As String, i As Byte
Randomize
x = Format$(Int(Rnd * 1899) + 1, "0000")
For i = 1 To Len(x)
Me.Controls("TextBox" & i).Value = Mid$(x, i, 1)
Next
End Sub
View 4 Replies
View Related
Jun 24, 2014
is there any rule for random number to be picked up? Any Rule, Any Formulae, Any Calculation Anything, Any authentic routine which may guess what would be the next random number? for example if first random number is 825587 then what would be the next?
View 4 Replies
View Related
Jan 5, 2014
I have the following formulae to pick up a random number from 0 to 9999.
=TEXT(RANDBETWEEN(0,9999),"0000")
I want to start this random search from a specified number. for example if i press F9 it should show 3456 at first press and then onward.
View 1 Replies
View Related
Oct 20, 2009
I have a spreadsheet of 1000+ companies and I want to take a random sampling of 100 of them. I would assume this could be accomplished by auto-filling a numerical value to each line of data (which I did), then scrambling only the column with the numbers (which I can't figure out), and then selecting the entire text and resorting it to put the numbers back in order and then just work with the first 100 rows (which I can do, if I knew how to make the numbers random).
View 10 Replies
View Related
Mar 12, 2014
I have taken on a project that is would seem is far out of my league right now, but need to deliver.
I have attached the example spreadsheet what I am trying to achieve, which is basically a random automated number allocator.
Look forward to receiving your replies,
Example.xlsx
View 4 Replies
View Related
