public Statistics withStddev(Double stddev) {
        setStddev(stddev);
        return this;
    }
<p>
For a numeric field, the standard deviation.
</p>

@param stddev
       For a numeric field, the standard deviation.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-forecast/src/main/java/com/amazonaws/services/forecast/model/Statistics.java