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Description: Returns the total cumulative number of failures at a given time.
Syntax: CUMFAILURES(Data_Src, Time, [Conf_Level])
Data_Src is the source data sheet from which the value is calculated.
Time is the time at which the value is calculated.
Conf_Level is the percentage (entered as a decimal value) for the confidence bounds. It is an optional value and, if specified, must be greater than 0 and less than 1.
Remarks:
The Data_Src can be one of the following values:
If using a default data source, it must be either 1, 2, 3 or 4, as selected from the Data Source Index drop-down list.
It can take a data sheet name (e.g., "Folio1!Data 1").
It can take a variable name defined in the Defined Names window (e.g., datasource).
The Time value must be greater than 0.
Example:
CUMFAILURES(“Folio1!Data 1”,350,0.5) = 50.06959495
Note that this value will vary depending on the source data set.
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