The archaeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of it's archaeological importance, Tara has received extensive study (Reference:Tara: An Archaeological Surveyby Conor Newman, Royal Irish Academy, Dublin). Suppose an archaeologist wants to estimate the density of ferromagnetic artifacts in the Tara region. For this purpose, a random sample of 55 plots, each of size 100 square meters, is used. The number of ferromagnetic artifacts for each plot is determined.

(a) Identify the variable.

1. number of ferromagnetic artifacts per 100 square meters

2. number of plots of 100 square meters

3. number of samples per 100 square meters

4. all ferromagnetic artifacts

(b) Is the variable quantitative or qualitative?

qualitative

neither quantitative nor qualitative

both quantitative and qualitative

quantitative

(c) What is the implied population?

1. the entire Tara region

2.all archaeological sites originating around 4000 years ago

3. the entirety of Ireland

4. the 55 plots that were examined