Given the Following Time Series, Compute the Seasonal (Quarterly) Indexes

question 41

Essay

Given the following time series, compute the seasonal (quarterly) indexes, using the four-quarter centred moving averages. $$\begin{array} { | c | c c c c c | } \hline \text { Quarter } & 1993 & 1994 & 1995 & 1996 & 1997 \\\hline 1 & 62 & 48 & 50 & 43 & 57 \\2 & 51 & 45 & 46 & 39 & 32 \\3 & 53 & 44 & 46 & 37 & 31 \\4 & 46 & 37 & 42 & 32 & 29 \\\hline\end{array}$$

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Definitions:

Relative Humidity

The amount of moisture in the air compared to what the air can hold at that temperature, expressed as a percentage.

Vegetation

The plants and trees collectively found in a particular area, contributing to the habitat and ecosystem.

Lunar Radiation

Electromagnetic radiation emitted by the moon, primarily observed as reflected sunlight.

Biomes

Large ecological areas on the Earth's surface, with flora and fauna adapting to their environment, such as forests, deserts, and tundras.