Answer
There are no obvious outliers. The return "0.3" is a border-line outlier.
Work Step by Step
$IQR=Q_3-Q_1=0.075-(-0.075)=0.15$
$Lower fence=Q1−1.5\times IQR=-0.075−1.5×0.15=-0.3$
$Upper~fence=Q3+1.5\times IQR=0.075+1.5×0.15=0.3$
There is no data value less than -0.3 or greater than 0.3. The return "0.3" is a border-line outlier.
