Answer
The length of this tibia is above average.
Work Step by Step
According to the least-squares regression line, the expected lenght of the right tibia when the right humerus lenght is $26.11~mm$ is:
$ŷ =1.390x+1.11$
$ŷ =1.390\times26.11+1.11$
$ŷ=37.4029$
But, $37.96\gt37.4029$
