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List the issues to be considered when evaluating secondary data using the specification/methodology criteria (Table 4.2 in the text).
Forecast Values
The projected or predicted numerical values in the future based on current and historical data analysis.
Seasonal Indexes
Statistical factors used in time series analysis to adjust for seasonality and understand periodic fluctuations in data.
Regression Trend Line
A line on a scatter plot, derived from regression analysis, that shows the main trend of the relationship between two variables.
Mean Absolute Deviation
Mean absolute deviation is a measure of variability that represents the average absolute difference between each data point and the mean of the data set.
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