Informix Error -739

-739 Confidence must be in the range [0.80, 0.99] (inclusive).

If the value of the confidence desired is greater than 0.99, use HIGH mode. A value of less than 0.80 is not allowed because it will probably yield a poor distribution. If you are reducing the confidence to reduce the time that is required to execute the UPDATE STATISTICS statement, consider using a larger resolution value.