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FM Seasonality

4.1 Introduction to Time Series Plots

Time Series Plots

  • Time series plots are a specific type of graph, where the explanatory variable is time.
  • They are used to analyse how a system changes over time.
  • When describing a time series plot, the trend, seasonality, irregular fluctuations, structural change and outliers are all important aspects.
  • Time series plots can either be shown as a graph with data points connected by lines, or as a dot plot.
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