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Description: Returns the projected MTBF, based on the Crow Extended model.
Syntax: PMTBF(Data_Src, [Conf_Level])
Data_Src is the source data sheet from 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:
A default data source selected from the Data Source Index drop-down list.
A data sheet name (e.g., "Folio1!Data 1").
A variable name defined in the Defined Names window (e.g., datasource).
Example:
PMTBF(“Folio1!Data 1”,0.8) = 12.25701058
Note that this value will vary depending on the source data set.
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