21.   The survey has a margin of sampling error of plus or minus three percentage points.

22.   The survey has no statistical validity, Billingsley pointed out, and MSNBC has no intention of publicizing the winner.

23.   The survey has a margin of error of plus or minus five percentage points.

24.   The survey had a margin of sampling error of plus or minus four percentage points.

25.   The survey has a major limitation, however.

26.   The survey has a margin of error of three percentage points.

27.   The survey has its limits, she cautioned.

28.   The U. S. Geological survey has , released its first map showing the expected frequency of lahars in valleys downstream from the mountain.

29.   The survey had a margin of sampling error of plus or minus seven percentage points.