# QUESTION 3 A population of individuals was exposed to lead contamination in drinking water at the concentration of 27 parts per billion (ppb).

QUESTION 3

- A population of individuals was exposed to lead contamination in drinking water at the concentration of 27 parts per billion (ppb). The following represents a small sample set from the population indicating the level of response to the contaminant rated on a scale from 1-20. Within your response, please explain how you calculated your answer (1 indicating minimal effects and 20 indicating maximum effects to the lead exposure).

- Given the data set 9, 12, 7, 15, 8, 9, 10, calculate the following results:

- a. mean,
- b. mode,
- c. median, and
- d. standard deviation.

- Your response should be at least 300