The Tobit procedure is robust to top coding, and gives unbiased estimates.
What the futures market is trying to do is to get an unbiased estimate of 1rs 2 the spot interest rate over period 2.
Note that the quantities in the right hand sides of both equations are the unbiased estimates.
Instead, s is used as a basis, and is scaled by a correction factor to produce an unbiased estimate.
This is (at least in the ideal case) an unbiased estimate of the sampling variance.
Here "best" means giving the lowest variance of the estimate, as compared to other unbiased, linear estimates.
In this theory, Cronbach's alpha is an unbiased estimate of the generalizability.
An effect here may be to convert an unbiased raw estimate to an improved biased one.
Neither market value nor book value is an unbiased estimate of a corporation's value.
These proportions are shown in Figure 13c, d, and are unbiased estimates of the true p values.