In what years was the LDS recorded?

In what years was the LDS recorded?

• A. 1999 and 2002
• B. 2010 and 2016
• C. 2002 and 2016
• D. 1995 and 2005

Answer: (C)

Think about when data is actually collected for a variable in a time-based dataset. “Recorded” means there are data points for that variable in those years. In this dataset, the LDS values appear in two time points: 2002 and 2016. Those are the years when the data for LDS was collected and included, so they’re the correct pair. The other year pairs don’t line up with actual entries for LDS, so they wouldn’t be correct. This pattern often reflects the study’s schedule or where measurements were taken, showing LDS only at those two moments.

Think about when data is actually collected for a variable in a time-based dataset. “Recorded” means there are data points for that variable in those years. In this dataset, the LDS values appear in two time points: 2002 and 2016. Those are the years when the data for LDS was collected and included, so they’re the correct pair. The other year pairs don’t line up with actual entries for LDS, so they wouldn’t be correct. This pattern often reflects the study’s schedule or where measurements were taken, showing LDS only at those two moments.