Question

In an effort to assess the damage to ponderosa pine trees in the Coconino National Forest due to bark beetles, U.S Forest Service employees walk through specified 1.2-acre patches of forest and count the number of trees which display bark beetle damage. In one patch, 212 of the 396 trees displayed bark beetle damage.

Match each vocabulary word with its value or description:

Vocab words: population, sample, parameter, statistic, sample size

Value/descriptions: 184, 396, 212/396, set of all bark beetles, percentage of ALL trees with bark beetle damage, the trees which were looked at, 212, 150, all ponderosa pine trees in the Coconino National Forest

Answer 1

Vocabulary word	Value/Description
population	all ponderosa pine trees in the Coconino National Forest
sample	the trees which were looked at
parameter	percentage of ALL trees with bark beetle damage
statistic	212/396
sample size	396

Explanation:

Parameter is a population measure. Statistic is a sample measure. Population refers to all the items or subjects of interest. Sample refers to those items that are used for study.

Sample size, n =396

No. of favorable outcomes (here, trees with damage), x =212

Statistic =x/n =212/396