After Estimating a Trend Model for Annual Time-Series Data,you Obtain

question 112

Multiple Choice

After estimating a trend model for annual time-series data,you obtain the following residual plot against time. The problem with your model is that

• A)the cyclical component has not been accounted for.
• B)the seasonal component has not been accounted for.
• C)the trend component has not been accounted for.
• D)the irregular component has not been accounted for.

Learn the relationship between the correlation coefficient and error in prediction.

Understand the role of dummy coding in regression analysis when dealing with categorical variables.

Understand the components and interpretations of the multiple regression formula.

Comprehend the principles and calculations of slope and intercept in regression lines.

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