Based on quarterly data collected over the last five years,the following regression equation was found to forecast the quarterly demand for the number of new copies of a business statistics textbook: 
= 2,298 - 6635Qtr1 - 1,446Qtr2 + 303Qtr3 + 26t,where Qtr1,Qtr2,and Qtr3 are dummy variables corresponding to Quarters 1,,2 and 3,and t = time period. For a given year,the demand in Quarter 4 is on average ___________.
Definitions:
Development Phases
This term refers to the stages of growth and change that an individual goes through over the lifespan, including physical, cognitive, and emotional development.
Gottman
A psychologist known for his work on marital stability and relationship analysis through scientific direct observations.
Stability Prediction
The process of forecasting the future stability of a system, structure, or process based on current conditions and trends.
Positive And Negative Factors
Elements or conditions that can either contribute to beneficial outcomes (positive) or adverse effects (negative) in a given situation.
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