The Class of Linear Conditionally Unbiased Estimators Consists of A All

question 15

Short Answer

The class of linear conditionally unbiased estimators consists of a. all estimators of $\beta _ { 1 }$ that are linear functions of $Y _ { 1 } , \ldots , Y _ { n }$ and that are unbiased, conditional on $X _ { 1 } , \ldots , X _ { n }$ .
b. OLS, WLS, and TSLS.
c. those estimators that are asymptotically normally distributed.
d. all estimators of $\beta _ { 1 }$ that are linear functions of $X _ { 1 } , \ldots , X _ { n }$ and that are unbiased, conditional on $X _ { 1 } , \ldots , X _ { n }$ .

---

Definitions:

External Failure Costs

Costs incurred when a product or service fails to reach quality standards after being delivered to the customer, including returns, repairs, and lost sales.

Defective Products

Items produced that do not meet the quality standards set by the company or industry, resulting in waste or rework.

Services

Intangible economic activities provided to satisfy the needs or wants of consumers, such as healthcare, education, and financial advice.

Design Specifications

Detailed descriptions of the materials, parts, and components necessary to create a product, including the requirements for manufacturing, service, and quality.