Suppose U_t Is the Error Term for Time Period 'T

question 25

Multiple Choice

Suppose u_t is the error term for time period 't' in a time series regression model the explanatory variables are x_t = (x_t1, x_t2 …., x_tk) . The assumption that the errors are contemporaneously homoskedastic implies that:

• A)Var(u_t|x_t) = .
• B)Var(u_t|xt) = .
• C) Var(u_t|xt) = ².
• D) Var(u_t|x_t) = .

---

Definitions:

Gifted

Refers to individuals, often children, who exhibit high levels of aptitude or competence in one or more domains at an early age.

Longitudinal Study

A research design that involves repeated observations of the same variables over a period of time, extending from months to years.

Mental Illnesses

A wide range of mental health conditions that affect mood, thinking, and behavior, often leading to distress and difficulty in functioning.

Nonverbal Abilities

cognitive skills that do not require the use of language, including understanding and interpreting gestures, facial expressions, and other nonverbal cues.