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Which of these is a time series variable? Select one: A. Credit card balances of 30 students on December 31 of this year B. Net earnings reported by Xena Corp for the last 10 quarters C. Dollar exchange
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Which of these is a time series variable? Select one: A. Credit card balances of 30 students on December 31 of this year B. Net earnings reported by Xena Corp for the last 10 quarters C. Dollar exchange rates yesterday against 10 other world currencies D. Titles of the top 10 movies (in terms of total revenue) at the end of last week

User Taterhead
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Answer: The correct answer is "B. Net earnings reported by Xena Corp for the last 10 quarters".

Explanation: A time series is a collection of observations of a variable collected sequentially over time. Therefore the option "B. Net earnings reported by Xena Corp for the last 10 quarters". it is the correct option because it reflects the variable "net earnings" during the period of "10 quarters".

User Vyclarks
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