Question: Finding any long-term trends in the data is the first step in forecasting passenger volume. This might be a gradual rise or fall in the

Finding any long-term trends in the data is the first step in forecasting passenger volume. This might be a gradual rise or fall in the number of passengers. Usually, to accomplish this, you would plot the data over time and fit a trend line. You can get a sense of the general trend by looking at the slope of this line

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