text: Question about Casio FX-115ES Scientific Calculator
  
  # Binomial function in calculator fx-911ES
  
  How to use binomial function in calculator fx-911ES
  
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  • Casio Master
  
  Hello,
  
  The binomial probability distribution is defined as
  P(r;p;n) =(nCr)(p^r)*(1-p)^(n-r)
  where n is the number of trials, p the probability of success, and r the expected result.
  
  Let n=20, r=7, p=0.15 ( I do not know wether this exemple has any meaning in the context of your problem, but you have to enter values that mean something to you. I am only showing you the key strokes
  
  To enter 20C7 you press 20 [SHIFT][nCr]7 ;
  To enter 0.15 to the power 7 you type 0.15[X to ] 7 the key is between
  [x²] and [log]
  
  To enter (1-0.15) to power 20-7, you type 0.85 [X to] 13
  With [*] standing for multiplication key , and [X to] the raise to power key, the exemple above can be entered as
  
  ( 20 [SHIFT][nCr] 7) [*] ( 0.15 [X to] 7 ) [*] ( 0.85 [X to] 13 ) [=]
  
  Here is a screen capture to show you what it looks like. However on this calculator the combination 20 [SHIFT][nCr] 7 is represented as nCr(20,7).
  
  Hope it helps
  
  Posted on Nov 15, 2009
  
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  • Contributor
  
  HEY I AM USING FX911ES,
  i ant to know steps for linear interpolation,
  given= X Y
  3.0 5800
  3.2 6000
  no to find value of 3.1... in my old calculator it was.
  (fx911 MS) STEPS WERE.....
  mode(2times)- REG- linear
  3.0,5800 m+ (n1)
  3.2,6000 m+ (n2)
  3.1 (reg 2times) KITES sign =
  now please show steps of fx911MS...
  
  Posted on Apr 16, 2011
  
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  How to solve this in my fx911ES calc
  attached in the picture...i want to get the value of RB
  
  Posted on Jul 31, 2011
  
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  ### How do you do permutation problems, combination problems, and binomial probability problems on it? What keys do u press?
  
  Use the key next to which is the marking nPr, for permutations, and the key nCr for combinations. In all probability, the functions are accessed by pressing the SHIFT key first. To use these functions, enter the larger number (n), press the key or key sequence then enter the smaller number (r).
  I cannot say about the binomial function (I do not have the hardware with me), and do not really want to second guess you: you do not specify the type of problems you have in mind.
  
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  ### When i enter the binomial probability formula into the casio fx-115es it will not operate. it says that the problem lies in the (n-X)!X! part of the formula. I'm writing everything exactly the way it is in...
  
  You may be writing the expression as they appear in the formula, but the problem stems from the fact the factorial function increase rather rapidly and you cannot calculate the factorials of numbers larger that 69 which is the limit of the calculator.
  However if you use the built in Combination function nCr, you will avoid the problem. In the binomial function, the n!/(r!(n-r)!) factor can be replaced by nCr or nC(n-r).
  
  Do not use the explicit form with the factorials because you will get an overflow.
  
  Nov 09, 2010 | Casio FX-115ES Scientific Calculator
  
  ### How do I compute binomial Probability distribution on a casio fx 115 es
  
  Mar 07, 2010 | Casio FX-115ES Scientific Calculator
  
  ### Binomial function
  
  Hello,
  
  The binomial probability distribution is defined as
  P(r;p;n) =(nCr)(p^r)*(1-p)^(n-r)
  where n is the number of trials, p the probability of success, and r the expected result.
  
  Let n=20, r=7, p=0.15 ( I do not know wether this exemple has any meaning in the context of your problem, but you have to enter values that mean something to you. I am only showing you the key strokes
  
  To enter 20C7 you press 20 [SHIFT][nCr]7 ;
  To enter 0.15 to the power 7 you type 0.15[X to ] 7 the key is between
  [x²] and [log]
  
  To enter (1-0.15) to power 20-7, you type 0.85 [X to] 13
  With [*] standing for multiplication key , and [X to] the raise to power key, the exemple above can be entered as
  
  ( 20 [SHIFT][nCr] 7) [*] ( 0.15 [X to] 7 ) [*] ( 0.85 [X to] 13 ) [=]
  
  Here is a screen capture to show you what it looks like. However on this calculator the combination 20 [SHIFT][nCr] 7 is represented as nCr(20,7).
  
  Hope it helps
  
  Nov 12, 2009 | Casio FX-115ES Scientific Calculator
  
  ### When i press the MODE button in my CASIO fx - 911ES
  
  Hello,
  Just in case : Press [SHIFT][CLR] (9) [3: ALL] to reset the calculator and try [MODE] again.
  If that does not work, your calculator may be defective or a fake (not the genuine article). If at all possible, return it to where you bought it and get a refund.
  
  Here is a picture of the FX-115ES, its face looks like the 991ES. Hope I am mistaken.
  
  Oct 18, 2009 | Casio FX-115ES Scientific Calculator
  
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