When Autocorrelation Is Present,which Assumption of the Linear Regression Model $\sigma$

question 20

Multiple Choice

When autocorrelation is present,which assumption of the linear regression model is incorrect?

• A)E(e_t)=0
• B)var (e_t)=\(\sigma\)²
• C)cov(e_t,e_s)=0,t≠s
• D)e_t N(0,\(\sigma\)²)

---

Definitions:

Suspicion

The act or an instance of suspecting something wrong without certain evidence, often leading to distrust or skepticism.

American Industry

The sector of the United States economy involved in the production of goods and services, characterized by its evolution from agrarian to industrial to technological focus.

Second World War

A global conflict that lasted from 1939 to 1945, involving most of the world's nations and marked by significant events like the Holocaust and the use of atomic bombs on Japan.

Selective Training and Service Act

The 1940 law that initiated the first peacetime draft in United States history, requiring men of certain ages to enroll for potential military service.