The following methods are used to measure the trend of a time series EXCEPT:

A. Semi-average
B. Moving average
C. Free-hand
D. Deseasonalisation
E. Least squares

Answer:
C. Free-hand

Explanation:
In time series analysis, methods such as semi-average, moving average, deseasonalisation, and least squares are commonly used to identify trends. The “free-hand” method is not a formal statistical method for measuring trends in time series data.

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