# File lib/CharDistributionAnalysis.rb, line 76
        def get_confidence
            #"""return confidence based on existing data"""
            # if we didn"t receive any character in our consideration range, return negative answer
            if @_mTotalChars <= 0
                return SURE_NO
            end

            if @_mTotalChars != @_mFreqChars
                r = @_mFreqChars / ((@_mTotalChars - @_mFreqChars) * @_mTypicalDistributionRatio)
                if r < SURE_YES
                    return r
                end
            end

            # normalize confidence (we don"t want to be 100% sure)
            return SURE_YES
        end