In a Model Based on a Weakly Dependent Time Series

question 1

Multiple Choice

In a model based on a weakly dependent time series with serial correlation and strictly exogenous explanatory variables, _____.

• A)the feasible generalized least square estimates are unbiased
• B)the feasible generalized least square estimates are BLUE
• C)the feasible generalized least square estimates are asymptotically more efficient than OLS estimates
• D)the feasible generalized least square estimates are asymptotically less efficient than OLS estimates

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Definitions:

Perpetual

An inventory system where updates are made continuously to the inventory records, reflecting each sale or purchase.

Periodic Inventory System

An inventory system in which the inventory count and the cost of goods sold calculation are performed at set intervals, typically at the end of an accounting period.

Periodic Inventory System

An inventory accounting system where updates are made on a periodic basis, rather than continuously, often used for calculating cost of goods sold at the end of an accounting period.

Sales Returns & Allowances

Reductions in sales revenue for products returned by customers or allowances given for damaged goods.