Returns the smallest value for which the cumulative binomial distribution is greater than or equal to a criterion value. Use this function for quality assurance applications. For example, use CRITBINOM to determine the greatest number of defective parts that are allowed to come off an assembly line run without rejecting the entire lot.
Syntax
CRITBINOM(trials,probability_s,alpha)
Trials is the number of Bernoulli trials.
Probability_s is the probability of a success on each trial.
Alpha is the criterion value.
Remarks
 If any argument is nonnumeric, CRITBINOM returns the #VALUE! error value.
 If trials is not an integer, it is truncated.
 If trials < 0, CRITBINOM returns the #NUM! error value.
 If probability_s is < 0 or probability_s > 1, CRITBINOM returns the #NUM! error value.
 If alpha < 0 or alpha > 1, CRITBINOM returns the #NUM! error value.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How to copy an example
 Create a blank workbook or worksheet.
 Select the example in the Help topic.
Note Do not select the row or column headers.
Selecting an example from Help
 Press CTRL+C.
 In the worksheet, select cell A1, and press CTRL+V.
 To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.

A 
B 
Data 
Description 
6 
Number of Bernoulli trials 
0.5 
Probability of a success on each trial 
0.75 
Criterion value 
Formula 
Description (Result) 
=CRITBINOM(A2,A3,A4) 
Smallest value for which the cumulative binomial distribution is greater than or equal to a criterion value (4) 
