Question

The Global Youth Tobacco Survey asks youth to fill in the answers to several questions about their tobacco use. In this survey conducted between 2000 and 2007, it was found that in youth ages 13-15, 12 percent of boys and 7 percent of girls reported smoking cigarettes. This information was shared and reported on the American Cancer Society website. The information was then used by several industries in the fields of health care, insurance, and education.
What is a reason that these data may be unreliable?

Answer 1

Ok this might not be the best answer but just by reading it, it may be unreliable because numbers do change over time

Answer 2

The reason for the data to be unreliable is that the survey has been done between the year 2000 and 2007.The survey was done many years ago and this data cannot be used as it can change every year.

It cannot be considered factual as the data is very old. A huge change in the number could have occurred.

The number of individual getting involved in drugs are increasing day by day so a data that is 10 years old will not be feasible.