Exhibit 14-8.An real estate analyst believes that the three main factors that influence an apartment's rent in a college town are the number of bedrooms,the number of bathrooms,and the apartment's square footage.For 40 apartments,she collects data on the rent (y,in $) ,the number of bedrooms (x1) ,the number of bathrooms (x2) ,and its square footage (x3) .She estimates the following model: 
.The following table shows a portion of the regression results. 
Refer to Exhibit 14-8.The standard deviation of the difference between actual rent and the estimate of rent is:
Definitions:
Interest Accrue
The process by which interest is added to the principal sum of a loan or deposit, typically over time.
Instrument Due
This term refers to the date on which a financial instrument, such as a check or note, is payable.
Bearer
A person in the possession of an instrument payable to bearer or indorsed in blank.
Negotiable
Capable of being transferred or modified in terms of agreement or ownership through endorsement or delivery.
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