The sample size for a time series data set is the number of:
A)variables being measured.
B)time periods over which we observe the variables of interest less the number of variables being measured.
C)time periods over which we observe the variables of interest plus the number of variables being measured.
D)time periods over which we observe the variables of interest.

Question

Quizplus · Accepted Answer

The sample size for a time series data set is the number of time periods over which we observe the variables of interest. Therefore, the best choice is D, which states that the sample size is the time periods over which we observe the variables of interest. Choices A, B, and C all incorrectly include the number of variables being measured in the calculation of the sample size.

The Sample Size for a Time Series Data Set Is