Do the Constellations Visible in the Sky at a Particular

question 152

Multiple Choice

Do the constellations visible in the sky at a particular time of night (say 9 p.m.) follow a seasonal pattern?

• A)No, the same constellations are visible at 9 p.m. on any clear night of the year.
• B)No. As the year progresses, the constellations visible at 9 p.m. are the same, but their shapes change.
• C)Yes, at 9 p.m. on a clear winter night, ALL of the constellations you can see are different from the ones that appear at the same time on a summer night.
• D)Yes, at 9 p.m. on a summer night, MOST of the constellations you can see are different from those you can see on a winter night. Some constellations are visible all year long.

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Definitions:

Deseasonalized Time Series

A time series from which seasonal influences have been removed to better identify real trends, cycles, and irregular variations in the data.

Monthly Seasonal Indexes

Quantitative measures that adjust for seasonal variation in data by month, often used in forecasting and analyzing trends.

Moving Average

A statistical technique used to analyze data points by creating a series of averages of different subsets of the full data set.

Seasonal Variation

Refers to periodic fluctuations in data or variables that are related to seasonal changes.