Time series analysis

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Across
  1. 3. a series of events that are regularly repeated in the same order.
  2. 5. a tool, utensil, or other piece of equipment that is used for a particular purpose.
  3. 7. In statistics, econometrics, and signal processing, an autoregressive (AR) model is a representation of a type of random process; as such, it is used to describe certain time-varying processes in nature, economics, behavior, etc.
  4. 9. a change or slight difference in condition, amount, or level, typically within certain limits.
Down
  1. 1. a statistical tool designed to predict future trends and outcomes based on historical data
  2. 2. detailed examination of the elements or structure of something.
  3. 4. a general direction in which something is developing or changing.
  4. 6. a part or element of a larger whole, especially a part of a machine or vehicle.
  5. 8. a time series in which the data experiences have frequent and predictable changes recurring every calendar year.