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10 cards from this deck
General trend and seasonal variations.
Actual values are higher than the trend line suggests.
The overall direction of the data over time.
Variation = Actual value - Trend value.
Ice cream sales higher in summer, lower in winter.
Actual values are lower than the trend line suggests.
They help in planning for predictable demand changes.
Link them to real-world factors affecting the data.
Plot your time series data on a graph.
Values consistently above or below the trend line.
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