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如何在Excel中根據分配的概率生成隨機值?

如果存在帶有一些值和相應分配百分比的表格,如下表中的屏幕截圖所示。 現在,我想根據值列表及其分配的概率生成隨機值。
doc隨機,概率為1

隨機產生隨機值


箭頭藍色右氣泡 隨機產生隨機值

實際上,要生成具有概率的隨機值,您只需要兩個公式。

1.在表的相鄰單元格中,鍵入此公式 = SUM($ B $ 2:B2),然後將此公式向下拖動到所需的單元格。 看截圖:
doc隨機,概率為2

2.選擇一個將要放置隨機值的空白單元格,鍵入此公式 =INDEX(A$2:A$8,COUNTIF(C$2:C$8,"<="&RAND())+1), 按 恩特r鍵。 然後按 F9 鍵以根據需要刷新值。
doc隨機,概率為3


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Comments (19)
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This comment was minimized by the moderator on the site
A formula ta errada... <= altera a P()... Tem que ser < apenas... 

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You're a life saver.
Thanks a million!
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MÌNH KHÔNG HIỂU LẮM. TẠI SAO PHẢI LÀM NHƯ VẬY Ạ?
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Ottimo lavoro! Questo è proprio quello che cercavo. Però non funziona con Calc di Open Office, che fra l'altro accetta solo i comandi in italiano.
E' possibile tradurla in modo che funzioni anche con calc? Io non ci sono riuscito.Grazie.

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THE FORMULA WORKS ONLY IF ONE SUBSTITUTES RAND() WITH RANDBETWEEN(1;X) WHERE X IS THE TOTAL NUMBER OF POSSIBLE OUTCOMES, WHICH WOULD SIMPLY BY AN INTEGER GREATER THAN 1.
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frankly I don't think this formula works.
I am trying to sample the results of an election so I have in a row the votes of different parties. no I want to go in & pick up randomly ten ballots (sort of like exit polling works), but I always get the first party in the rows.
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How can I utilize this random number generator but only have it generate odd or even numbers inside of the criteria? When I add the "ODD" or "EVEN" coding, it only produces the number "1" in the cell.
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Hi, Preston Ehrsam, the Insert Random Data tool cannot insert random even or odd numbers only.
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Sorry Just Noticed that I extend the cumulative prob. outside the desired limits
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Does this work if the data in the cells are horizontal instead of vertical? Mine is not. Thanks
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Hello, can anyone help me getting the correct formula? I would like to get random values but with certain limits. For example, randomly get "red, blue, green, orange or pink", but I have a specific quantity of items for each color so I have to set this condition within the formula.
Thanks!
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You can try the Insert Random Data to create the custom list as red, blue, green, orange and pink, then insert then to range randomly.
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