#### Answer

3.29

#### Work Step by Step

To find the mean, add the values of each number in the set, then divide the sum by the count of the numbers in the set.
$1.4+2.1+1.6+3.0+1.4+2.2+1.4+9.0+9.0+1.8=32.9$
There are 10 numbers in the list.
$32.9\div10=3.29$