An EViews workfile currently displays a range of 1980Q1 2014Q4 and a sample of 1990Q1 2014Q4 as shown below.

Which of the following is true? Select all that apply.

The data (or time-series) in the workfile can have data points from 1980Q1 to 2014Q4 inclusive, and some of these data points can be missing.

This workfile uses the quarterly frequency.

The user of this workfile is currently working with data from 1980Q1 to 2014Q4.

The range of the workfile allows for up to 140 observations while the current (or active) sample allows for a maximum of 100 observations.

Explanation

This workfile contains quarterly data from 1980Q1 to 2014Q4. However, the portion of the data in the current sample is from 1990Q1 to 2014Q4, and thus 100 out of a possible 140 observations will be used in subsequent operations such as calculating a sample average.