Use the following to answer questions
Figure: Determining Surplus and Loss 
-(Figure: Determining Surplus and Loss)In the graph,$14 would allow for an effective price ceiling.
Definitions:
Unbiased Estimator
A statistic used to estimate a parameter of a population that, on average, exactly equals the true parameter.
Variance
Variance measures the dispersion of a set of data points around their mean value, quantifying how spread out the data points are.
Error Variable
The difference between observed and predicted values in a statistical model, representing unexplained or random variability.
Regression Analysis
A statistical method for modelling the relationship between a dependent variable and one or more independent variables.
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